This Flying Fog MMA cmpression short is designed with 100% chlorine resistance for improved wear and longer life. Made of 50% polyester and 50% PBT Endurance+ fabric for long-lasting wear. 4-way stretch provides a body-hugging fit, shape retention and soft comfort, reinforced seams, ideal for dual meets, practice and training. 100% chlorine resistant to last through hours of training, nonslip drawstring at the waist