Banana Republic offers a comfortable, great-fitting selection of mens trunks. Our men’s underwear trunks come in boxers, briefs and boxer briefs. Mens underwear trunks from this assortment are made from fabrics that are designed to keep their shape and fit. Made from cotton fabric that is cool and comfy, mens trunks from this selection wash like a dream. Men’s underwear trunks are available in classic white, gray and black. The mens trunks in this collection have wide waistbands for all-day fit and comfort.