Secret No. 7: Convert any bra into a cross-back style bra without the expense of buying a new one just for those racer-back style or tank tops. These Fashion Edition clips can create more functional swimwear! Ideal for water and beach activities like swimming, volleyball, surfing and more. Not only does the bra clip keep those pesky straps hidden and prevent them from slipping, it adds instant lift to your breasts. Won't show through fabrics, easy to use, thin and comfortable.