Blueseventy Fusion wetsuit review

The new 2025 Fusion from Blueseventy is billed as the brand’s most comfortable and best performing triathlon wetsuit yet.

It’s aimed at those who want a little help maintaining the correct body position, so it features 5mm neoprene in the upper legs and hips to assist in holding a neutral position in the water.

Features and design

That extra buoyancy through the hips helps lift the lower body to reduce drag and promote a more streamlined swim. It’s a feature that makes a noticeable difference if you’re someone who tends to drop the legs slightly when you’re tired or pushing hard.

The suit is constructed from the latest generation of Yamamoto neoprene – specifically, the 39 cell – which is known for its flexibility, buoyancy, and long-term durability.

This newer material offers a really good balance between softness and resilience, so you get the stretch and movement you want in key areas without compromising the structure and support that help with form and flotation.

It’s also laminated with Blueseventy’s proven jersey lining, which supports durability and maintains flexibility over time, even after repeated use in salt or chlorinated water.

First impressions of this suit were good. It has a clean, modern design that looks sharp and feels high quality in the hand. The matte panels give it a premium finish, while the subtle branding keeps things sleek rather than flashy.

The low-profile neckline is finished with a soft, flexible material that helps to create an improved seal around the neck to reduce chafing and minimise water intake.

The wrist and ankle cuffs are trimmed with a silicone-like band that feels gentle on the skin and holds everything snugly in place during the swim.

It’s easy to get on – always a good sign – and I got a great fit straight away in pretty much all areas. The suit sat nicely through the torso with good contact along the back and an even feel throughout.

There was no awkward pulling or bunching, and I had plenty of space in the shoulders without any tightness around the chest or neck.

The panel layout across the back and underarms seems well thought out and gives a surprising amount of freedom for what is still quite a buoyant and insulating suit.

Performance and fit

In terms of fit, there was perhaps a little extra fabric around the back of the knees which felt cumbersome when walking, but once in the water I couldn’t feel it and I didn’t experience any water pooling there.

It might just be a trade-off for the full coverage and generous leg length, especially if, like me, you prefer that little bit of added protection around the joints for cold swims.

The neckline was slightly lower than others, a feature I know will be welcomed by many who don’t like the feeling of constriction in this area.

It stays comfortable even over longer efforts, which is important when you’re spending a significant amount of time in open water.

Despite the thicker feel of the suit compared to some of the others on test, it was plenty flexible enough, particularly around the arms and shoulders – which is where you need it most.

The VO2 chest panel uses a thinner, more pliable material that helps with chest expansion and breathing, and that really came through in the swim. I never felt restricted or short of breath.

When swimming, you can hardly feel that you have the suit on other than the reassuring feeling of it holding you in a good position and keeping you warm.

The suit gives you the confidence to complete those longer training sessions with no chafing. I was able to complete hour-long sessions with water around 13 degrees no problem.

The suit has thinner side panels designed to enhance torso rotation, which is helpful for an efficient freestyle stroke. It’s also coated with SCS (Super Composite Skin), which gives the surface a hydrophobic quality.

That coating creates a smooth, silky finish that repels water and reduces drag, enabling you to glide more effortlessly through the water.

It genuinely does feel like it slips through the water with less resistance. This, coupled with the assistance in holding a good body position, translated to improved speed versus the pool for me, even without making any changes to technique or effort.

In transition, the suit’s super-quick to remove. The rear zip features a long, easy-to-grab strap that makes it simple to locate and open even with cold, numb fingers. It runs down quickly and creates a large opening, allowing you to easily slip the shoulders out.

A quick peel off and the shape and design of the lower legs – which are slightly tapered and finished with a low-friction lining – mean your ankles and feet are free in no time.

There’s also reinforced taping at stress points like the seams and zip base, which adds a layer of confidence that the suit can hold up to multiple fast exits and race day rigours.

The bottom line

Overall, this is a great suit with a number of features you would expect in a higher-end suit. It provides a good balance of warmth, flexibility, buoyancy, comfort and performance.

The thoughtful use of panel thickness and material types helps target support and stretch exactly where you need them.

The Fusion should definitely be in your short list for any triathlon with an open water swim – especially if you are a taller athlete who needs the length in the body to avoid compromising shoulder flexibility.

The fit, ease of use, and performance all impressed me, and it’s clearly built with both training and race-day practicality in mind.

Price	$450 / £350
Buoyancy	5mm legs, high buoyancy
Features	Low neckline, quick transition cuffs
Tech	SCS coating, 39-cell Yamamoto neoprene
Sizes	Women: XS-XL Men: XS-XXL