Under Armour Iso-Chill Mesh 9 Inch Performance Boxerjock (1277277). Stay cool and breathe easy from performance to performance in this mesh boxer brief. Made of polyester and elastane. Iso-Chill fabric feels cool to the touch while wicking away moisture to keep you dry. Anti-microbial properties control odor. 4-way stretch offers a comfortable, flexible fit. Flat-lock seaming helps eliminate chafing. Pouch constructed from ventilated mesh for increased breathability and cooling. Contour seam on pouch adds lifting support. Crotch gusset creates a next-to-skin fit. Seamless rear. Smooth, exposed elastic waistband with repeated logo. Removable tag sewn into back interior of waistband. Flyless.