Capezio Seamless Clear Back Sweetheart Bandeau Bra - NudePRODUCT DETAILS 92% Meryl Nylon 8%Lycra Spandex Meryl Skinlife and DanceFresh antimicrobial protection Provides support and modesty under dancewear and costuming TPU clear back strap has 2 hook positions on each end for adjustment Sizes XS and S provide support from "A" to "B" cups, and M, L and XL provides support for "B" to "C" cup customers TPU clear shoulder straps adjust in length and strap position