ORIGINAL TRIANGULAR INSERTS: Our Triangular Inserts are designed to fit into most triangle shaped swim tops and most sports bras. Slip them into the pocket of your top for instant push-up and lift. PATENT-PENDING DESIGN: Our design increases you by a full cup size! The padded hearts sit on the inside portion of the cup and are strategically placed to provide you with maximum lift and fullness (the outside portion of the cup is smooth). USE IN ANY TOP: Slip our inserts into the pocket of your swimsuit, sports bra, bralette or any top you like! Our inserts are waterproof and specifically designed to be worn in the water. They will not get heavy or absorb a lot of water. FOUR CUP SIZES: You are unique and your inserts should be too. We make exact cup sizes (size chart is included in the images and very accurate).