90% Polyamide, 10% ElastaneHigh-Quality Fabrics: These bikini panties are made from ultra soft elastic Nylon and spandex blendFashion Design: Laser cut , low rise bikini for a smooth look under clothes, Tag-free, touch more comfortableSeamless Feature: Soft bikini bottom seamless style with no show panty lines. Excellent job at no VPL even in yoga pants,leggings,jeans or workout underwearDouble-layer Crotch: No ride up underpants with wide breathbale crotch for added protection, sweat wicking, breathable and healthy Tag-free, touch more comfortableWashing Instruction: Machine Wash cold (much better in mesh laundry bag). Tumble dry low (or hang dry). Do not iron. Do not bleach.