Much like surfwear, it’s good to have a rash guard layer next to the skin. The 661 Under Liner short is a long-legged three-panel design made for clinging to the skin and letting the loose short layer slide against it. Chafing is bad. Made from stretch Lycra. Sizes Small - XL. The color is grey with “sixsixone” on waistband and logo screened on leg.