BOOMBA Ultra Boost Inserts Cocoa Size B Double Sided Adhesive Bra Open box BOOMBA Ultra Boost Inserts in Cocoa, Size B fits bra sizes 30D, 32C, 34B, 36A The set is new, open box, and comes in its original BOOMBA box, with the inserts individually wrapped in protective plastic. For the perfect fit, we recommend choosing your true size. Only size down if you are in between sizes.