Blueseventy Reaction Sleeveless Wetsuit (MEN'S)Key Features 1Easier Breathing An improved, lower neckline increases comfort and minimizes chafing without compromising the seal to prevent water entry. Sleeveless Core Cooling When water temperatures are warmer (think above 70) a sleeveless suit can help regulate your core body temperature keeping you cooler during the swim. A small sacrifice in speed can be a winning tactic as you head out of the water with a lower core temperature, ready for a hot