The Impact shorts is made of extensible fabric in four directions. A silicone strip located inside the belt and the hem of the leg allows it to stay perfectly in place when you move. The padded buttocks are supplemented by Di Guard abrasion -resistant panels for better protection. Short has 50+ UV protection to protect against harmful rays of the sun. This shorts is adapted to the practice of many nautical activities requiring protection at the level of the buttocks, such as navigation and paddle or gliding sports such as canoe and kayak. Stem: 90% neoprene 10% nylon sizes xs - s - M - L - XL - XXL