Flexees by Maidenform Women's Firm Control Strapless Slip with Convertible Straps #3741 100% Cotton Body: 78% Nylon, 22% Lycra Elastane The molded seamless smooth cup provides containment and coverage along with the added benefit of ultra clean styling. Low back is perfect for evening wear 34-36A, 34-38B, C Hand Wash Warm. Only non-chlorine bleach when needed. Line Dry. Do not iron.