Aviana Nursing Bra Soft Cup Cup Band and Side Frame: 100% polyester; Back: 80% Nylon 20% Spandex; Cup Sling and Cushion Straps: Laminated Polyester Foam. Band, cup, sling, strap: 100% polyester Back: 80% nylon, 20% spandex Country of origin: Imported Care: Hand wash cold in mild detergent, wash colors separately, use only non-chlorine bleach, line dry, low iron.