Shapely Bust & Sexy Cleavage With the double power-net, the DX Brassiere effectively gathers and pushes fat from sides, upper arms, back and underarm to fall into bra cups. Additionally, the 2 teflon bones and broad underarm band provide double protection to prevent fat migration from bra cups. To complete the contouring effect, the 3-piece full cup holds breasts firmly in place for a fuller bust, uplifted shape and firmer breasts.