Fitted pants. Revolutionary 37.5 technology. Retains a lasting scent after washing. Hidden pocket. Wide, contoured hip belt. UPF 50+ UV protection. 87% Polyester / 13% Spandex. Comfort is all about maintaining the right temperature and humidity levels on the outside of your skin; these two components are part of the microclimate. 37.5 technology helps manage moisture that accumulates around you for optimal comfort. Moisture is trapped in your gear. 37.5 technology evaporates moisture from the "player's microenvironment." Less energy cooling your body = more energy you put into the game. The more layers of 37.5 technology, the better.