Alpinestars Men's MT Bionic Shorts 37%Polypropylene 36%Polyester 18%Polyethylene 6%Lycra 3%Polyurethane Imported Lightweight mesh and Lycra construction is extremely durable. Well ventilated to keep you cool while riding. Ventilated foam padding covering hip bone, thigh and tailbone for exceptional impact protection. Extra safety offered by hard external PU reinforcements on the thigh and tailbone areas. The Bionic Short features ultra lightweight, streamlined impact protection with ventilated padding and is cut for comfort in the riding position. Extensive impact protection zones allow you to attack the trail with determination. Lightweight mesh and Lycra construction is extremely durable Well ventilated to keep you cool while riding Extensive impact protection zones Extra safety offered by hard external PU reinforcements on the thigh and tailbone areas Ventilated foam padding covering hip bone, thigh and tailbone for exceptional impact protection