Choose from an array of Old Navy mens underwear to keep you cool and comfortable all day. Old Navy men's underwear is durable and easy-care. Whether you prefer classic boxers, briefs or boxer briefs we have the color, pattern or print for you in our mens underwear collection. Discover men's underwear featuring men's undershirts like v-necks and crew neck styles as well as tanks in convenient, affordable 2 packs. Let Old Navy mens underwear collection become your 'go to' place for all your underwear needs.