Our classic 6" fitted boxer brief with fly features Feather-Seam™ construction, proprietary Butter Blend™, and an exposed elastic Core-flex™ waistband to ensure maximum comfort. 66% modal, 26% lyocell, 8% elastane. 6in Inseam. Feather-Seam™ Construction eliminates common irritations through a softer stitch. Hidden Core-Flex™ Waistband works in secret to prevent unwanted rolling for incredible comfort. Side-entry fly for easy access. Butter Blend: Behold the silky smooth perfection of Stance's proprietary Butter Blend™ technology, a sustainably sourced fiber innovation that delivers on our promise of softness superiority.