PREMIUM MATERIAL: 92% Viscose Made From Bamboo and 8% Spandex,light and soft texture.It is 30% more breathable than cotton underwear and the average body temperature is 3°lower than cotton ones,bringing 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 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