New Release- Jiu Jitsu "Links" Rash Guards in Pink are now available at www.KnoxxGear.com. Available in adult and youth sizing. A rash guard wicks sweat through its breathable polyester material, helping the sweat evaporate and keeping your body at a cool running temperature. Wearing a rash guard helps you avoid contracting potentially nasty ailments like ringworms and staph infection from mats. Rash guards also help you avoid rug burn on your elbows and other covered areas as they drag against the mat.