A swimming wetsuit is buoyant enough to change your body position. It lifts your hips, legs, and torso so you can hold a more horizontal line. That lift reduces drag. It is not a life jacket, and it does not remove the need for safe open water habits.
Where the Buoyancy Comes From
Swimming wetsuits use closed-cell neoprene foam. The gas pockets inside the foam make the material less dense than water. Because the foam displaces water while weighing less than the same volume of water, it creates upward force. A full-coverage suit has more foam in contact with your body than a sleeveless suit, so it usually feels more buoyant.
Blueseventy builds its wetsuits from Yamamoto neoprene in 38, 39, and 40 cell grades. A higher cell number means more flexibility in the neoprene. The lift comes from panel placement and thickness, not just the cell grade.
When you put a wetsuit on, a thin layer of water enters between your skin and the suit. Your body warms that layer. That is how wetsuits provide insulation. The buoyant force comes from the neoprene foam itself.
How Much Lift Should You Expect?
The most noticeable change happens in the legs and hips. Swimmers' legs tend to sink, and a full-coverage wetsuit adds enough lower-body lift to bring them closer to the surface. You will feel less drag and spend less energy fighting a dropped leg position.
The same suit will give you a little more lift in salt water than in fresh water because salt water is denser. Your body composition affects the feeling too. Swimmers with more body fat already float more easily, so the change from a wetsuit often feels smaller. Leaner swimmers usually notice the lift more.
Why Panel Placement Matters
A good swim wetsuit does not add thickness everywhere. It places buoyancy where it corrects body position and leaves the shoulders free to rotate. Blueseventy's LIFT buoyancy panels are designed for this targeted lift. The Helix pairs those LIFT panels with thin, flexible neoprene in the arms and shoulders. The result is a suit that supports a higher body line without restricting the catch.
The LIFT Buoyancy Short takes the same idea further. It uses NBR foam for maximum buoyancy across the hips and thighs. Swimmers use it as a training tool or when they want lower-body lift without a full suit.
Blueseventy Suits and How They Use Buoyancy
- Helix: race-day suit pairing LIFT buoyancy panels with thin, flexible neoprene in the arms and shoulders.
- Reaction: full-coverage performance suit built for frequent training and longer swims.
- Fusion: balanced full-suit lift for shorter, frequent swims.
- Thermal Reaction: cold-water full suit with Zirconium jersey lining for added thermal protection.
- LIFT Buoyancy Short: targeted hip and leg lift with NBR foam.
- Sprint: entry-level full suit with swim-specific buoyancy.
How Fit Affects the Buoyant Feel
A suit that is too big allows water to flush through and reduces the buoyant feel. A suit that is too tight restricts your stroke and can make the lift feel unstable. A swim-specific wetsuit should feel snug on land and more comfortable in the water. When the fit is right, the neoprene sits close to your body and the lift feels even.
What a Wetsuit Is Not
Blueseventy wetsuits add buoyancy, but they are not Coast Guard-certified personal flotation devices. They will not keep you safe in conditions you are not prepared to handle. Use them with open water safety practices, swim with appropriate support, and respect cold water. Cold water adds risk, and a wetsuit provides added thermal protection, not an elimination of that risk.
Finding the Right Amount of Lift
The best way to learn how much lift a suit gives you is to swim in it. Blueseventy offers a Test Swim policy: you can swim in a wetsuit and still return or exchange it if the suit comes back clean, dry, unmodified, and with tags attached. That removes the guesswork from choosing a suit based on buoyancy alone.
