Polo Ralph Lauren 4D-Flex Cool Microfiber Boxer Briefs - 3 Pack (LBBBP3). Designed with advanced cooling technology, these mid-rise boxer briefs adapt to your body with 4-way stretch and moisture management properties. Made from polyester and elastane. Each pack contains three boxer briefs. Functional fly has contrast taping at the opening and a full vertical seam for additional support. Crotch gusset inset holds the fit close to your body. Seamless seat for a sleek look. Wide, exposed elastic waistband has bright stripe and repeated logo lettering. Double-stitched hems feature the signature embroidered Polo player above the left hem. Flatlock seams feel smoother against the skin to reduce chafing. Tagless. Moisture wicking tech evaporates sweat away from the surface of your skin so you stay cool and dry. Open fly.