NWT Navy Bikini - size chart in photos Cute bikini swimsuits are designed with a twist front and lace up back. A push up removable padded bra and adjustable shoulder straps provide maximum support. The high waisted bikini bottom with ruched detail offers excellent tummy control. Tie side bathing suits with drawstrings allow you to freely adjust the tightness. Comfortable Materials: This strappy bikini is made of 82% Nylon and 18% Spandex, making it super soft, stretchy, and comfortable to wear.