Get the swim brief that's streamlined to reduce drag. The front-lined Nike HydraStrong fabric provides long-lasting durability, and flatlock seams help reduce chafing, so you can focus on hitting your personal best. Benefits:Nike HydraStrong fabric provides long-lasting durability, swim after swim. Front lined for better fit, comfort, and a secure feel. Flatlock seams help reduce chafing. [] Product Details:Interior drawcord. Embroidered Swoosh. Body:51% recycled polyester 49% (PBT) polyester (Chlorine Resistant); Lining:100% recycled polyester. HAND WASH COLD SEPARATELY. Style: NESSA004; Color: Midnight Navy; Size: 30; Gender: Male; Age Group: Adult | Nike Swim HydraStrong Essential Men's Brief in Blue, Size: 30 | NESSA004-440