The Sport Trunk 4" is the longer of our two trunk silhouettes, with a low-profile waistband that hits at the top of the thigh. Built-in jockstrap for lift and support, paired with a contoured front pouch that gives room without compression. Made from 94% MicroModal™ and 6% elastane: softer than silk, breathable, and moisture-wicking, with a smooth handfeel against the skin.