David Archy Men's 2 Pack Bamboo Rayon Long Pajamas Pants Loungewear Sleep Bottoms 95% Bamboo Rayon/ 5% Spandex Soft to the Skin: 40S delicate viscose fiber extracted from bamboo, the sleep bottom for men is super soft and breathable Wide Waistband: 35mm wide waistband stays put and leaves no marks onto your skin Comfy and Stretchy: Spandex added to keep the PJ pants last long with well-fitting style NOTE: Based on customer feedback, we re-adjusted the size and style to make it more fitting. Please rest assured to purchase based on our size chart. Considerate No-Fly: Avoid embarrassment and facilitate your home life even when guest is present