NWT Boomba Invisible Lift Inserts, size L (F on size chart), beige. For reference, I wear a 34DDD and size F was recommended. Never worn, still in original packaging. Unfortunately the inserts don’t work with the dress I wanted to wear them with. And since they are non-returnable, my loss is your gain! Description from the Boomba website: Our lightly padded double-sided adhesive insert is the most versatile insert we offer. This lightly padded insert can be cut to fit most clothing. -Perfect for a natural-looking lift. -Natural-looking lift -Prevents nipple slips in low cut tops -Insert stays put and keeps clothing in place -Sweat & water resistant -Interchangeable between outfits, no sewing required -Our inserts are not intended for individuals who have sensitive or thin skin or women who are pregnant or breastfeeding Unlike a sticky bra that is supported by the adhesive, BOOMBA inserts are supported by the clothing, they cannot stay up by themselves. It is crucial to wear them in tight, structured, and fitted tops.