... underpants Components: fabric: 95% regenerated cellulose fiber (modal) 5% spandex Lining: 100% silver fiber1, natural, safe, antibacterial, bactericidal. 2, ... regulate your body temperature, make you feel warm in winter and cool in summer, and promote blood circulation.Note: Wash tempersture is ... degree, neutral detergent, non-chlorine wash, cold ironing, and air-dry do not expose it to sunshine.