A wetsuit that is too buoyant does not feel fast. It feels like you are fighting your own body position. Buoyancy equals speed only when it settles you into a horizontal line without forcing you to correct it every few strokes. In a blueseventy suit, lift comes from Yamamoto 38, 39, and 40-cell neoprene, and on the Helix and LIFT short, from additional buoyancy panels whose placement determines how much correction you feel while swimming. Most of the time, the problem is lift placement or too much correction for your body.
A blueseventy wetsuit is swim equipment, not a Coast Guard-certified personal flotation device. It adds lift to improve body position. It does not replace safe swim practices.
The signs you can feel
- Legs and hips riding too high. A suit with too much lower-body lift holds your hips and thighs above the surface. You feel like you are sliding downhill, and your chest wants to dive. Your kick breaks the surface and catches air instead of pushing water. A well-fitted blueseventy suit lets you lie flat enough that your heels stay near the surface, but your feet still finish each kick in the water. If every upward kick splashes and your lower back arches, the lift is doing too much work.
- Sighting and breathing get harder. Excess chest or torso lift pushes your chest up and drops your hips when you lift your eyes to sight. You crane your neck or roll farther than normal to get a clean breath. That extra movement costs rhythm and energy.
- Shoulder or neck fatigue early in a swim. A suit with more lift than your body needs asks your shoulders to hold you flat. You may feel smooth for 200 meters, then notice your stroke shortens and your neck tightens.
- A side-to-side roll. Lower-body lift that exceeds what your core can stabilize makes your legs float high and feel disconnected from your hips, especially when you breathe. If the lower half moves like a cork while your core sits lower, lower-body lift is excessive for your stroke.
A quick test before race day
Push off face down in a pool or calm open water with your arms extended and your ankles relaxed. Glide without kicking and without pressing your chest down. In a suit with the right buoyancy for your body, you settle horizontal within a second or two, heels close to the surface, face in the water. If your feet pop to the surface and your chest wants to sink, your lower-body lift is too much. If your chest stays high and your hips drop, the suit's lift may be sitting too high for your body. Repeat the test after a few hundred meters, not just at the start, because your body position changes once you warm up and find your stroke.
Lift placement and doubling up
The most common cause of too much buoyancy is combining two sources of lift. The LIFT Buoyancy Short uses NBR foam to add concentrated lift through the hips and thighs. Blueseventy launched the LIFT Buoyancy Short in 2020 as the first buoyancy short with NBR foam. It works as a training tool or standalone lower-body lift. If you wear it under a full wetsuit, you combine the suit's lift with the short's lift. For many swimmers, that combination over-lifts the legs and produces the symptoms above. Use the short on its own for body-position work, or use the full suit on its own. Test both configurations before you race.
Lift placement matters as much as lift amount. The Helix places LIFT panels in the lower body and uses thin, flexible Yamamoto neoprene in the arms and shoulders. Blueseventy added LIFT panels to the Helix in 2018. That layout suits swimmers who need hip lift without restricted shoulder rotation. If your kick is already strong and your legs ride high on their own, those lower-body panels can bring your feet too far out of the water. A more balanced suit like the Reaction, or the mid-range Fusion, can settle you into a flatter line.
Matching a blueseventy suit to your body position
Instead of chasing maximum lift, match the suit to how much correction you need. If your legs sink badly and you tire from kicking, a suit with lower-body lift helps. If your legs sit neutral on their own, a balanced suit is the better choice. The Helix is the race-focused option with LIFT panels in the lower body and thin, flexible arm and shoulder neoprene. The Reaction uses higher-grade neoprene in a balanced performance cut and holds up better for frequent swimming. The Fusion is the mid-range suit with a lower-sitting neckline and moderate lift. The Sprint is the entry-level option for shorter events. For cold water, the Thermal Reaction adds a Zirconium jersey lining for thermal protection without changing the swim-specific fit.
Fit and returns
Before you blame the buoyancy, check the fit. A suit that is too small will restrict your shoulders and can make you feel like you are fighting the suit. Use the blueseventy size chart and the online sizing tool. The fit should feel snug on dry land and more comfortable once you are in the water. If you are between sizes or unsure, order your best match and take a test swim. Blueseventy allows you to swim in a wetsuit and still return or exchange it within 30 days as long as it comes back clean, dry, unmodified, and with tags and accessories. That is the fastest way to learn whether the suit's lift is right for your stroke.
