Godsen Men's 2-Pack Sexy Boxer Briefs Stretchable Cotton Underwear 90%Cotton 10%Spandex hand or machine washable 80% nylon, 20% Spandex. jersey140g/m2 Washable, good flexibility, drawstring adjusts tightness. Pouch: Contoured 2-ply pouch with supportive center seam and reinforced structural seams along sides. Waistband: 1-1/2-inches of soft stretch microfiber; minimize that muffin top! Quick-drying moisture absorption perspiration