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10 Best Long John Wetsuits 2025 in the United States

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Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

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Our Top Picks

#1

Winner

Synergy Triathlon Wetsuit 3/2mm - Volution Sleeveless Long John Smoothskin Neoprene for Open Water Swimming Ironman & USAT Approved (Men's L1, Men)

Rating
9.9
Chosen by1,406
Thickness
Material
Fit

Most important from
195 reviews

Thickness
The wetsuit is on the thinner side, providing slightly less buoyancy, which some swimmers prefer for better water traction.
Material
The neck is low and soft, reducing the chance of chafing, and the interior liner is soft enough to swim commando.
Fit
One of the best suits for ocean open-water swimming, offering a near-perfect fit for those with a swimmer's build.
Entry System
Easy to get on and off thanks to the stretch, though a key pocket would have been a nice addition.

The Synergy Triathlon Wetsuit 3/2mm Volution Sleeveless Long John is designed for open water swimming and triathlons. The wetsuit uses high-quality hydrodynamic neoprene with a 3mm core for buoyancy and 2mm for flexibility on the legs and back. This combination helps swimmers float higher and move faster while saving energy.

The sleeveless design ensures a full range of motion, which is crucial for competitive swimming. The seams, along with the YKK anti-corrosion zipper, are well-crafted to reduce drag, making the suit more efficient in water. The smoothskin material on the neck adds comfort as it reduces the likelihood of chafing or discomfort.

The fit is designed to cater to a wide range of sizes, ensuring most users can find a suit that fits well. However, some users might miss the extra warmth that sleeves provide, especially in colder waters. The wetsuit has a 1-year warranty, which requires product registration and is only applicable to the original owner. This wetsuit is a solid option for both beginner and experienced triathletes looking for a balance of buoyancy, flexibility, and comfort.

Rating
9.9
Chosen by1,406
Thickness
Material
Fit

Most important from
195 reviews

Thickness
The wetsuit is on the thinner side, providing slightly less buoyancy, which some swimmers prefer for better water traction.
Material
The neck is low and soft, reducing the chance of chafing, and the interior liner is soft enough to swim commando.
Fit
One of the best suits for ocean open-water swimming, offering a near-perfect fit for those with a swimmer's build.
Entry System
Easy to get on and off thanks to the stretch, though a key pocket would have been a nice addition.
#2

O'Neill Wetsuits Men's Epic 4/3mm Back Zip Full Wetsuit, Black/Black/Black, Medium Short

Rating
9.8
Thickness
Fit
Entry System

Most important from
1170 reviews

Thickness
The 4mm thickness keeps you incredibly warm, even in 50-55F water, making you forget you're in the water.
Fit
The wetsuit fits perfectly, even for those with broader shoulders and chest, without being loose in the legs.
Entry System
The zipper holds out water effectively, even without a bat wing, ensuring no cold water runs down the back.

The O'Neill Epic 4/3mm Back Zip Full Wetsuit is a solid choice for various water activities like surfing, diving, and paddle sports. Its 4/3mm thickness strikes a good balance between warmth and flexibility, making it suitable for moderately cold water. The wetsuit is made from UltraFlex neoprene, which is known for its superior stretch and comfort, enhancing performance and ease of movement. Additionally, the FluidFlex Firewall panels offer wind resistance and extra insulation, beneficial in colder conditions.

The seams are blind stitched and triple glued, effectively keeping water out and adding durability to the wetsuit. The back zip entry system simplifies putting on and taking off the wetsuit, while ensuring a watertight seal. The fit is tailored to individuals with a medium-short build, providing appropriate measurements for chest, waist, and height. However, the back zip may not be as convenient as a front zip for some users, and the specific sizing might not suit all body types.

The wetsuit's construction and materials are robust, but it is imported from China, which might influence purchasing decisions for some. It offers good value for its price, especially for recreational water activities.

Rating
9.8
Thickness
Fit
Entry System

Most important from
1170 reviews

Thickness
The 4mm thickness keeps you incredibly warm, even in 50-55F water, making you forget you're in the water.
Fit
The wetsuit fits perfectly, even for those with broader shoulders and chest, without being loose in the legs.
Entry System
The zipper holds out water effectively, even without a bat wing, ensuring no cold water runs down the back.
#3

O'Neill Women's Reactor-2 3/2mm Back Zip Full Wetsuit, Black/Black, 10S

Rating
9.6
Fit
Entry System

Most important from
388 reviews

Fit
This wetsuit is perfect for scuba diving, providing a customized fit that helps control buoyancy better than rental suits.
Entry System
The back zipper is long and user-friendly, making it simple to put on and take off.

The O'Neill Women's Reactor-2 3/2mm Back Zip Full Wetsuit is designed as an entry-level wetsuit suitable for various water activities like surfing and diving. With a thickness of 3/2mm, it offers decent insulation for mildly cold waters. The wetsuit is made from ultra-stretch neoprene, which is known for its flexibility and comfort. This material helps improve performance by allowing greater freedom of movement.

The seamless paddle zones enhance this mobility by reducing seam placement, thereby minimizing discomfort during paddling or swimming. Additionally, the wind-resistant smoothskin provides extra insulation against cold winds, which is beneficial in keeping the wearer warmer in cooler conditions. The backzip entry system is user-friendly, simplifying the process of putting the wetsuit on and taking it off, while maintaining a water-resistant closure to minimize water entry.

The fit is tailored for women, with specific size dimensions ensuring better comfort and performance during activities. Some users might find the sizing a bit tricky as it is specified in Short format (10S), which is suitable for individuals within a specific height and weight range. This wetsuit ranks well in its category, and its strengths lie in its material quality, comfort, and ease of use. However, it might not be the best choice for those needing extremely thick wetsuits for very cold water or those preferring chest zip systems.

Rating
9.6
Fit
Entry System

Most important from
388 reviews

Fit
This wetsuit is perfect for scuba diving, providing a customized fit that helps control buoyancy better than rental suits.
Entry System
The back zipper is long and user-friendly, making it simple to put on and take off.

Buying Guide for the Best Long John Wetsuits

Choosing the right long john wetsuit can significantly enhance your comfort and performance in water activities. Long john wetsuits are sleeveless, providing flexibility in the arms while offering warmth and protection to the core and legs. To find the best fit for you, it's essential to understand the key specifications and how they align with your needs and preferences.
ThicknessThe thickness of a wetsuit is measured in millimeters and affects both warmth and flexibility. Thicker wetsuits (5mm or more) provide more insulation and are suitable for colder waters, but they can be less flexible. Medium thickness (3-4mm) offers a balance between warmth and flexibility, ideal for moderate temperatures. Thinner wetsuits (2mm or less) are best for warmer waters and offer the most flexibility. Choose the thickness based on the water temperature you'll be in most often.
MaterialWetsuits are typically made from neoprene, which provides insulation and flexibility. Higher quality neoprene, such as super stretch or ultra-stretch neoprene, offers better flexibility and comfort. Some wetsuits also feature additional linings for extra warmth or quick-drying properties. Consider the material based on your need for flexibility, comfort, and additional features like quick drying.
SeamsThe construction of the seams in a wetsuit affects its durability and water resistance. Flatlock seams are durable and comfortable but allow some water to seep in, making them suitable for warmer conditions. Sealed seams (glued and blind-stitched) are more water-resistant and better for colder waters. Taped or liquid-sealed seams offer the highest level of water resistance and durability. Choose the seam type based on the water temperature and your need for durability.
FitA proper fit is crucial for a wetsuit to function effectively. It should be snug but not too tight, allowing for a full range of motion without letting in excess water. Sizes can vary between brands, so it's important to refer to the specific size chart and consider trying on the wetsuit if possible. Ensure the wetsuit fits well around the chest, waist, and legs, and that there are no gaps or areas that feel too tight.
Entry SystemThe entry system of a wetsuit affects how easy it is to put on and take off. Back-zip wetsuits are the most common and easiest to get into, but they can allow more water to enter. Chest-zip wetsuits offer better water resistance and flexibility but can be trickier to put on. Zipperless wetsuits provide the best flexibility and water resistance but can be the most challenging to wear. Choose the entry system based on your preference for ease of use versus performance.

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