The Pro Flex Boxer Brief is engineered to move with minimal friction and complete comfort. These Boxer Briefs feature The Original 3D Pouch to ensure everything is separated and supported, so you can always put your best foot forward. The fabric is a breathable, moisture-wicking polyester blend mesh featuring Ionic+® anti-odor technology that does not wash out. Fabric: 89% Recycled Polyester, 11% Spandex The Original 3D Pouch Breathable mesh Friction-free smooth finish Ionic+® anti-odor tech Premium no-roll waistband Chafe-free flatlock stitching SIZE & FIT This 6.5" inseam Boxer Brief has a secure feeling fit. All BN3TH fabrics are soft and made from a performance stretch fabric. If your measurements are between sizes, select a larger size for a looser fit or a smaller size for a tighter fit.