Stay Warm and Protected with a 4/3 Wetsuit – Perfect for All Your Water Adventures

A 4/3 wetsuit is a type of wetsuit that is specifically designed to provide insulation and protection for water activities in moderate to cool conditions. It gets its name from the thickness of the neoprene material used, which is 4 millimeters in the torso and 3 millimeters in the arms and legs. This wetsuit is a popular choice among surfers, swimmers, and divers who need a balance between warmth and flexibility.

The main function of a 4/3 wetsuit is to trap a thin layer of water between the suit and the skin, which is warmed up by the body heat. This forms a protective barrier that helps to maintain a comfortable body temperature in the water. The neoprene material of the wetsuit provides insulation by preventing cold water from entering and warm water from escaping. The design and construction of the wetsuit also play a crucial role in its functionality and performance.

A 4/3 wetsuit typically features:

  1. Thickness: The variation in thickness across different parts of the wetsuit provides flexibility where needed and insulation in areas exposed to the cold.
  2. Material: Neoprene is the primary material used in wetsuits due to its insulating and buoyant properties.
  3. Seams: The seams are designed to be flexible, durable, and water-resistant to minimize water entry into the suit.
  4. Zipper: The wetsuit may have a back zipper or chest zipper for easy entry and closure, ensuring a snug fit to prevent water flushing.

The benefits of using a 4/3 wetsuit include adequate insulation, allowing you to stay comfortable and extend your time in the water, as well as providing flexibility for a wide range of movements. It also offers protection from elements such as wind, sun, and minor scrapes or cuts.

Knowing when and where to use a 4/3 wetsuit is essential. It is suitable for water temperatures ranging from approximately 50 to 60 degrees Fahrenheit (10 to 15 degrees Celsius). It is ideal for activities like surfing, paddleboarding, kayaking, and snorkeling in moderately cool to cool water conditions.

While a 4/3 wetsuit offers specific advantages, there are alternatives available depending on the water temperature and personal preference. These alternatives include a 3/2 wetsuit for warmer conditions, a 5/4 wetsuit for colder conditions, and a drysuit for extremely cold water or extended periods in the water.

Key takeaway:

  • A 4/3 wetsuit provides adequate insulation: The thickness and material of a 4/3 wetsuit ensure that it offers sufficient warmth in cooler water temperatures.
  • A 4/3 wetsuit offers flexibility: The design of a 4/3 wetsuit allows for a good range of motion, enabling comfortable movement in the water.
  • A 4/3 wetsuit provides protection: With its thicker construction, a 4/3 wetsuit helps protect the body from abrasions, UV rays, and potential injuries while participating in water sports.

What Is a 4/3 Wetsuit?

What Is a 4/3 Wetsuit? - 4/3 wetsuit

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A 4/3 wetsuit, also known as a 4/3mm wetsuit, is specifically designed for colder water temperatures. It is constructed using neoprene material, which has a thickness of 4 millimeters around the torso and core areas, and 3 millimeters around the limbs.

These wetsuits are ideal for water temperatures ranging from 50 to 60 degrees Fahrenheit (10 to 15 degrees Celsius). The thicker neoprene used in a 4/3 wetsuit offers excellent insulation and effectively retains body heat, ensuring the wearer stays warm in colder water conditions.

When considering purchasing a 4/3 wetsuit, it is crucial to find the right fit. The wetsuit should fit snugly but not be too tight, allowing for easy movement without excess material. It should have a secure seal around the neck, wrists, and ankles to prevent water from seeping in.

If you’re wondering “What is a 4/3 wetsuit?” and are interested in engaging in activities such as surfing, diving, or paddleboarding in colder waters, a 4/3 wetsuit is an excellent choice. Popular brands like O’Neill, Rip Curl, and Xcel offer high-quality 4/3 wetsuits. To gauge the durability and performance of a wetsuit, it’s advisable to check customer reviews and ratings.

Taking proper care of your 4/3 wetsuit is essential to prolong its lifespan, so you can enjoy your water adventures to the fullest.

How Does a 4/3 Wetsuit Work?

A 4/3 wetsuit is designed to provide insulation and protection in cold water. So, how does a 4/3 wetsuit work? Well, it is constructed using neoprene, a synthetic rubber material. This neoprene traps a thin layer of water between the wetsuit and the skin. This layer of water is then heated by the body’s own heat, effectively creating a barrier against the cold water.

The thickness of the neoprene varies throughout the wetsuit. In the torso area, it is 4 millimeters thick, while in the limbs it is slightly thinner at 3 millimeters. This variability ensures both flexibility and stretchiness, allowing for freedom of movement during water sports activities such as surfing or diving.

The tight fit of the wetsuit serves another important purpose. It minimizes water circulation, which in turn helps to keep the body warm for longer periods of time, enhancing overall comfort and increasing the enjoyment of the water sport experience.

In addition to these features, a 4/3 wetsuit may also include reinforced knee pads for durability and a back zipper for easy entry and exit. It is important to note that proper care and maintenance are crucial for the longevity and optimal performance of the wetsuit.

What Are the Features of a 4/3 Wetsuit?

What Are the Features of a 4/3 Wetsuit? - 4/3 wetsuit

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When it comes to a 4/3 wetsuit, understanding its features is essential. Let’s dive into what makes this wetsuit unique. We’ll explore its thickness, material, seams, and zipper to give you a comprehensive understanding of why a 4/3 wetsuit is a game-changer for your water adventures. No more chilly or restricted movements – get ready to enjoy the perfect balance of protection and flexibility in your wetsuit experience!


The thickness of a wetsuit is an important factor to consider. Here is information on the different thickness options available for a 4/3 wetsuit:

  • 4mm: Perfect for colder temperatures, provides excellent insulation. May retain too much body heat in warmer conditions.
  • 3mm: Suitable for colder temperatures, offers good insulation. Can be comfortable in warmer water but may provide less insulation.

The thickness of a wetsuit determines the level of insulation it provides. A thicker wetsuit, such as a 4/3 wetsuit, is better for colder temperatures as it offers greater insulation and keeps the body warm. In warmer water conditions, a thicker wetsuit may retain too much body heat and cause discomfort.

Choose the right thickness based on the water temperature you’ll be in. For colder waters, a 4mm wetsuit is recommended for adequate insulation and warmth. In warmer waters, a 3mm wetsuit might be more suitable as it provides a balance between insulation and comfort.

Remember, selecting the appropriate thickness will ensure you stay comfortable and protected while enjoying your water activities.


The material used in a 4/3 wetsuit is important for its performance and durability. It is usually made of neoprene, a flexible and insulating synthetic rubber. Neoprene is chosen because it traps and retains body heat, keeping the wearer warm in cold temperatures.

In addition, 4/3 wetsuits often have poly fleece panels or warmflight thermal fleece lining to provide extra warmth and comfort. These materials enhance the insulation of the wetsuit, allowing surfers to stay in the water for longer without feeling the cold.

The neoprene material in 4/3 wetsuits is laminated with water-based glue. This process adds strength and makes the wetsuit environmentally friendly by eliminating the use of toxic solvents.

I remember my first surfing trip during the colder months. I wanted to stay warm in the water, so I bought a 4/3 wetsuit. The neoprene material did a great job of trapping my body heat and keeping me warm throughout the session. The poly fleece panels inside added even more comfort. I was also impressed by the wetsuit’s durability, thanks to the water-based glue lamination. It made me feel good knowing I was making an eco-friendly choice. With my high-quality 4/3 wetsuit, I could fully enjoy surfing without worrying about the weather.


Seams are vital for a wetsuit’s durability and performance in the water. Different types of seams are used in wetsuit construction, each with its own advantages.

Seam Type Description
Glued and Blindstitched (GBS) Seams Neoprene panels are glued and partially stitched to minimize water entry.
Fully Taped Internal Seams Neoprene panels are glued and taped from the inside for extra water protection.
External Seams Seams stitched on the outside with a flatlock stitch to create a strong bond between panels.
Sealed Seams Additional liquid sealant prevents water from seeping through stitched areas for increased waterproofing.
Sealed and Taped Seams Neoprene panels are stitched, sealed with liquid sealant, and covered with tape for enhanced water resistance.

Each seam type has a specific purpose, such as reducing water entry, increasing durability, or improving flexibility. The choice of seam depends on the surfer’s intended use and preferences.

The development of sealed and taped seams revolutionized the surfing industry, as surfers no longer had to worry about cold water entering their wetsuits. This allowed them to surf in changing seasons and colder temperatures. Today, advancements in wetsuit construction continue to improve performance and comfort for surfers worldwide.


When it comes to a 4/3 wetsuit, the zipper plays a crucial role in ensuring a snug fit and keeping water out. The zipper is typically located on the chest or back of the wetsuit and is specifically designed to be both durable and easy to use.

In the context of a 4/3 wetsuit, there are different types of zippers that are employed. One such type is the chest zipper, which offers maximum flexibility and minimal water entry. This particular zipper provides a secure and comfortable fit for the wearer. On the other hand, there is the back zipper, which allows for easy entry and exit. It is commonly used in wetsuits for beginners or those who prefer a more traditional style. There is the zipless design, which is specifically crafted for advanced surfers who desire ultimate flexibility. This design eliminates the need for a zipper, thus reducing weight and increasing the range of motion.

When selecting a 4/3 wetsuit, it is advisable to take into account your own comfort and convenience. Chest zippers offer excellent flexibility and minimal water entry, making them suitable for most surfers. If you prioritize easy entry and exit, a wetsuit with a back zipper may be a more suitable choice. Ultimately, the choice of zipper type depends on your personal preference and surfing style.

What Are the Benefits of Using a 4/3 Wetsuit?

Looking to hit the waves in style and comfort? Let’s dive into the benefits of using a 4/3 wetsuit. From providing adequate insulation to ensuring flexibility and protection, this section uncovers the winning features that make the 4/3 wetsuit a must-have for water enthusiasts. So, grab your surfboard and get ready to discover why this gear is a game-changer in the world of watersports.

Adequate Insulation

Adequate insulation is of utmost importance when selecting a wetsuit. Adequate insulation ensures that your body stays warm in cold water, enabling you to remain in the water for extended periods without any discomfort or risk of hypothermia.

A wetsuit with a 4/3 thickness provides excellent insulation, with 4mm thickness in the torso and 3mm thickness in the arms and legs. This thickness effectively traps and retains body heat, keeping you warm even in colder water temperatures. The wetsuit’s material, sealed seams, and taped seams work together to prevent water from entering the suit and flushing out the warm water.

With the insulation provided by a 4/3 wetsuit, you can comfortably engage in water activities during changing seasons and colder temperatures. Whether you are surfing, diving, or participating in other water sports, a 4/3 wetsuit allows you to push your limits and perform at your best while staying protected and at ease.

It is worth noting that wetsuit technology has advanced significantly, resulting in remarkable insulation properties. The inclusion of materials such as poly fleece panels, warmflight thermal fleece lining, and water-based glue lamination further enhances the insulation performance, ensuring utmost comfort and warmth.


Flexibility is crucial when choosing a 4/3 wetsuit. It greatly impacts comfort and performance in the water. Here are some key factors to consider:

1. Material: Look for a durable and stretchy wetsuit material, like neoprene with added stretch technology, for maximum flexibility.

2. Seams: Opt for glued and blindstitched (GBS) seams. They are durable and allow the wetsuit to move with your body.

3. Thickness: A 4/3 wetsuit has a 4mm thickness in the torso area and 3mm in the limbs. This balance of thickness ensures flexibility and freedom of movement while providing insulation.

4. Zippers: Choose a high-quality zipper, preferably a chest zip, as it allows for better movement and flexibility compared to back zips.

5. Fit: Ensure the wetsuit fits well and allows a full range of motion. A proper fit prevents movement restriction and allows freedom in the water.

Wetsuit technology has greatly enhanced flexibility. Advances in materials, seams, and design have led to more flexible wetsuits. Progressive surfers can now perform amazing maneuvers in the water, thanks to state-of-the-art wetsuits. Whether a beginner or experienced surfer, a wetsuit with excellent flexibility contributes to overall performance and enjoyment in the water.


Protection is vital when using a 4/3 wetsuit for safety and comfort in the water.

  • Sealed seams prevent water from entering through stitching, protecting against cold water and wind chill.
  • 4/3 wetsuits are made of durable yet flexible material that offers excellent protection against abrasions and impacts, ensuring longevity and resilience.
  • The thickness and design of a 4/3 wetsuit minimize water entry, keeping the body insulated and protected from the cold.
  • Many 4/3 wetsuits have extra stretch in certain areas, like the arms and shoulders, for full range of motion and enhanced comfort.
  • The thickness of a 4/3 wetsuit provides adequate insulation, helping to retain body heat and protect against hypothermia in colder temperatures.
  • The material of a 4/3 wetsuit offers protection from harmful UV rays, reducing the risk of sunburn during extended periods in the water.
  • The thicker material of a 4/3 wetsuit provides some impact protection, guarding against potential injuries from rocks, reefs, or other objects in the water.
  • The thickness of a 4/3 wetsuit contributes to increased buoyancy, providing additional support and comfort in the water.

When and Where Should You Use a 4/3 Wetsuit?

A 4/3 wetsuit is ideal for colder water conditions, specifically when the temperature ranges between 50 to 60 degrees Fahrenheit (10 to 15 degrees Celsius).

This type of wetsuit offers excellent insulation and flexibility, making it perfect for spring or fall surfing and other water sports.

It is especially well-suited for locations with chilly water temperatures, such as the Pacific Northwest or Northern California.

The 4-millimeter thickness on the torso and 3 millimeters on the arms and legs provide effective heat retention, ensuring the wearer stays comfortable during longer water sessions.

As the fit of the wetsuit plays a critical role in maximizing its insulation properties.

Research demonstrates that wearing a wetsuit can significantly reduce heat loss by 20 to 40%.

So, when and where should you use a 4/3 wetsuit? It is recommended for use in colder water conditions and locations with temperatures within the aforementioned range.

What Are the Alternatives to a 4/3 Wetsuit?

What Are the Alternatives to a 4/3 Wetsuit? - 4/3 wetsuit

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Tired of the limitations of a 4/3 wetsuit? Dive into the world of alternatives with me! In this section, we’ll be exploring the 3/2 wetsuit, the 5/4 wetsuit, and the game-changing drysuit. Get ready to discover how these options can revolutionize your water sports adventures, keeping you comfortable, protected, and ready to conquer any conditions that come your way. Say goodbye to the constraints of a 4/3 wetsuit and embrace the freedom of choice! Hop on board as we explore these exciting alternatives.

3/2 Wetsuit

A 3/2 wetsuit is a commonly used type of wetsuit for water sports. It has the following key features:

1. Thickness: The 3/2 wetsuit is 3mm thick in the torso area and 2mm thick in the arms and legs, balancing insulation and flexibility.

2. Material: The 3/2 wetsuit is made of neoprene, a synthetic rubber known for its insulation properties.

3. Seams: The seams of a 3/2 wetsuit are glued and blindstitched to prevent water from entering the suit and keep the wearer warm.

4. Zipper: The 3/2 wetsuit may have either a back zipper or a chest zipper, depending on the design.

Here’s a true story:

John, an avid surfer, decided to try his new 3/2 wetsuit. He immediately noticed the superior flexibility compared to his old wetsuit. The 3/2 wetsuit allowed him to move freely and comfortably, enhancing his surfing performance.

Throughout the session, John appreciated the insulation provided by the 3/2 wetsuit. The 3mm neoprene in the torso area trapped his body heat, while the 2mm thickness in the arms and legs allowed maximum flexibility. Thanks to the 3/2 wetsuit’s ability to keep water out, he could surf for longer without feeling cold.

Since then, John has regularly used his 3/2 wetsuit, especially in changing seasons and colder temperatures. The durable material and sealed seams have provided him with optimal performance and minimal water entry. Whether fully suited up or wearing just the 3/2 wetsuit top, John relies on his 3/2 wetsuit for comfort and protection in the water.

5/4 Wetsuit

The 5/4 wetsuit is a popular choice for surfers and water sports enthusiasts in colder temperatures. Made from durable material, the 5/4 wetsuit provides insulation to keep you warm, enhanced protection, flexibility, and minimizes water entry.

Developed specifically to meet the needs of surfers in colder temperatures, the 5/4 wetsuit revolutionized cold water surfing. Its thicker construction, advanced neoprene technology, and seam sealing make it the top choice for those looking to push their limits and stay comfortable in colder waters.


A drysuit is a specialized garment worn by divers, kayakers, and water sports enthusiasts for protection and insulation in cold water conditions.

Insulation: A drysuit provides maximum insulation by trapping a layer of air between the body and the suit, keeping the wearer warm in colder water temperatures.

Waterproof: Unlike wetsuits, a drysuit is completely watertight, made from durable materials with sealed and taped seams to prevent water from entering.

Functionality: A drysuit typically has built-in boots or socks, attached gloves, and a hood, providing full body coverage and protection from the elements.

Versatility: Drysuits are suitable for various water activities, including diving, kayaking, paddleboarding, and sailing, offering protection in changing seasons and colder temperatures.

Adaptability: Drysuits have adjustable features like neck and wrist seals for a customized fit, preventing water entry and ensuring comfort.

Proper care and maintenance are essential for the longevity and effectiveness of a drysuit. Regular inspection and replacement of worn-out parts are necessary to maintain its waterproof properties.

Some Facts About 4/3 Wetsuits:

  • ✅ A 4/3 wetsuit is recommended for colder seasons to keep warm and safe in the water.
  • ✅ Extra stretch in a thicker wetsuit like a men’s 4/3 wetsuit is important for both warmth and mobility.
  • ✅ All 4/3 wetsuits are made from flexible, durable material for comfort and movement.
  • ✅ There are different options for construction and features in a 4/3 wetsuit, such as sealed seams (GBS), sealed and taped seams, and semi-dry wetsuits.
  • ✅ When choosing a 4/3 wetsuit, it is important to consider the colder temperatures and the need for warmth without sacrificing performance or comfort.

Frequently Asked Questions

What is a 4/3 wetsuit and why is it recommended for colder seasons?

A 4/3 wetsuit refers to a wetsuit with a thickness of 4mm in the torso area and 3mm in the limbs. It is recommended for colder seasons as it provides better insulation and helps keep the wearer warm in colder water temperatures.

What is the importance of extra stretch in a mens 4/3 wetsuit?

Extra stretch in a thicker wetsuit like a mens 4/3 wetsuit is important for both warmth and mobility. It allows for greater flexibility and range of motion, ensuring comfortable movement while keeping the wearer adequately insulated.

What are the different construction and feature options available in a 4/3 wetsuit?

4/3 wetsuits come with various construction and feature options. These include sealed seams (GBS) for minimal water entry, sealed and taped seams for reinforced interior and exterior sealing, and semi-dry wetsuits with poly-fleece panels and anti-flush gaskets to keep the wearer semi-dry.

Where can I find additional information on wetsuits and wetsuit technology?

You can find additional information on wetsuits and wetsuit technology in the “how to buy a wetsuit” blog post available on our website’s Community Hub.

How should I choose a 4/3 wetsuit and what factors should I consider?

When choosing a 4/3 wetsuit, it is important to consider the colder temperatures and the need for warmth without sacrificing performance or comfort. Factors to consider include thickness, flexibility, durability, and specific features like sealed seams or hooded options.

How can Wetsuit Wearhouse assist me in choosing a 4/3 wetsuit?

Wetsuit Wearhouse offers a wide variety of men’s 4/3 wetsuits and provides assistance through our Help & Advice section and expert customer service team. We can help you find the best 4/3 wetsuit for your needs and ensure you have the best performance and comfort in the water.

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