BOOMBA Demi Boost Lite (Formerly Perfect Boost) Inserts in Beige size I fits bra sizes: 34I, 36H, 38G, 40F, 42E Demi Boost (Lite) Inserts are abalone-shaped inserts that increase your cup size by one cup. They give your bust a fuller look when you wear those plunging necklines and low-cut dresses. Prevents nipple slips in low-cut tops. Interchangeable between outfits. Lightweight and super comfy to wear Perfect Boost Inserts are now Demi Boost (Lite) Inserts. Don't worry! It's still the same product, shape, and feel you know and love. For the perfect fit, we recommend choosing your true size. Only size down if between sizes. Unlike a sticky bra that is supported by adhesive, BOOMBA® inserts are supported by the clothing and cannot stay up by themselves. It is crucial to wear them in fitted tops. New, open box, unused in original packaging. Outer packaging is labeled under the old Perfect Boost name.