Bunker Underwear Extasy Bamboo Trunk 4-Pack 25% cotton 4-Pack Fabric: 70% bamboo rayon 25% cotton 5% spandex jersey 180 GSM; soft, smooth texture. Absorb moisture and wick it away. Keeping cool and dry. Antibacterial Low rise, falls below natural waistline. front contour pouch; 1 1/2'' nylon elastic with side jacquard logo; 2'' inseam; Machine wash cold with like colors, tumble dry low, do not bleach, cool iron Bunker EXTASY trunk is the comfort that you want.