Every OOMBRA® is made from super soft cotton and is reversible, so you always get 2 in 1. Our patented design hugs without binding. Our cotton jersey fabrics never trap smells or irritate skin like synthetics used in athletic wear. And OOMBRAs never have any hardware – no clips, clasps, strap adjusters, or wires. OOMBRAs fit a wide variety of body shapes, from flat chests up to bra sizes 34D and 36B.