How It Fits Slim Fit: form-fitting through the butt and thighs. No fly. Made For Beach days and beyond. The first-ever aquatic underwear with a built-in BallPark Pouch™, this pair can be worn under unlined board or swim shorts. Featuring our DropTemp™ Cooling Technology to actively cool you down, its ultra-light micro-mesh is both quick-dry and quick-drain (AKA: chafe-free comfort in and out of the water). Built In Tech BallPark Pouch™, DropTemp™ Cooling Technology, Flat Out Seams™, Three-D Fit™, bonded hems at leg opening, low-profile FOMO stash pocket. Made From Polyester (87%), elastane (13%). Measurements 5” inseam.