David Archy Men's 4 Pack Ultra Soft Comfy Breathable Bamboo Rayon Trunks Underwear No Fly Grey 95% Bamboo Rayon/ 5% Spandex Imported Note: We are upgrading the waistband colors, so you may receive the one different from the previous version. Sorry for the confusion. But the two versions are same good. Gentle machine wash in cold water, to maintain maximum performance and recovery VERSATILE PERFORMANCE: Bamboo rayon is a kind of cellulosic fiber extracted from natural materials-bamboo. It is featured with good air permeability, lightweight and stable dyeing property Super Soft Fabric: Bamboo rayon material feels ultra cozy and cool on the skin and silky to the touch CONTOUR POUCH DESIGN: The 3D pouch can make your package more comfortable without any sticky; While flat locked stitching creates a virtually seamless feel in sensitive areas NO WEDGIES: One piece clean cut in the back to avoid embarrassed adjustment for better comfort Stay Put Waistband: Soft waistband won't roll or leave marks