CHECK THE SIZE CHART (in the image section above) The Head Tricomp Skin Mens Wetsuit is for triathletes and open water swimmers. The neoprene and Lycra used internally facilitate movement and increase comfort. The completely water repellent neoprene does not absorb water, so it does not add weight to the body. The grip panels located on the forearms allow maximum grip during the attack.  Out of the water, the strategic position of back zipper makes it easier and faster to remove. Buoyancy Thickness varies from 5 to 2mm to facilitate buoyancy where needed Sizes have been designed to guarantee complete adherence to the body, just like a second skin. Muscle compression extends sports performance. This suit features a fuse neck cut  Extra stitches for easy adjustment of arm and leg length. In complete compliance with standards and regulations. 100% Neoprene laminated with 20% Polyester and 80% Nylon fabric. About Wetsuits: Triathlon wetsuits have come a long way since their inception by Dan Empfield in the late 80's. Customised specifically to the requirements of triathletes, these wetsuits boast certain unique features that other wetsuit types lack. Triathletes have aided the progression of the triathlon wetsuit with their input, refining and improving the design year on year. Generally a Triathlon wetsuit will have thinner, more flexible neoprene around the shoulders for freedom of movement. To make the wetsuit quicker to remove during transitions, triathlon wetsuits tend to have a longer easy-reach zip. To make the swimmer more hydrodynamic tri wetsuits tend to have a smoother surface to reduce drag, making for a faster swim. Triathlon wetsuits also provide extra buoyancy to the triathlete, meaning energy is used more efficiently.