Top cup lace: 86%nylon 14%elastane embed cup lace:100%nylon backs:92%nylon 8%lycra elastane. interior support side sling for accessory uplift and shaping. leotard second keeps straps in place. 34-42 c, d, dd, ddd. beam wash warm. only non-chlorine decolorize when needed. line dry. do not iron..