HUUB Design Men's Archimedes 3mm/5mm Triathlon Swim Wetsuit 100% neoprene Imported Full-cut wetsuit offers maximum comfort and performance; NBR-designed X-O skeleton for added buoyancy and efficient swimming Ideal suit for athlete with 3mm thick neoprene in the top half and 5mm in the legs; added buoyancy maximizes height for hips and legs while swimming Bicep release allows for greater range of motion and efficient stroke; crossover alignment panel guides arm straight with the suit Flexible calf release panel relieves pressure to allow for freedom of movement and improved kicking, propulsion, and circulation Refer to sizing chart for proper fit