Vented Lycra performance material lightweight and durable to keep the muscles warm. Exclusive molded cup cavity provides perfect fit in groin area. 2" Heavy duty and stretch waistband ensures comfort and support. Diagonal Velcro tabs follow the movement of your leg. Hardcore performance cup stays in place. Vented cup pouch allows for temperature control. Reebok's antimicrobial material improves sanitation. Machine washable.