PREMIUM MATERIAL: 92% Bamboo Viscose + 8% Spandex, light and soft texture, better skin-friendly than cotton material, bring a fresh touch to your skin. COMFORTABLE FABRIC: Breath from nature, comfortable and breathable, moisture wicking, keep you refreshed all day, very suitable for home, exercise, travel and other daily activities. 92% Bamboo Viscose, 8% Elastane Machine Wash Fastening: Elastic Underwear loose ELASTIC STRETCHING: The waist is full of elasticity, not loose, and does not fall down. It fits gently on the waist skin and does not produce an uncomfortable gathering feeling. INGENIOUS DESIGN: The buttocks are seamless, and the non-sensing label is printed on the outside, which eliminates the itchy sewing label and prevents the label from directly touching the skin and causing discomfort. FEATURES: Open fly design, more comfortable, breathable, more freedom, fuller vision, more male charm.