The perimeter is fixed with a clip.
5 cm20. Highly recommended!Italian, high quality Carvico Tesutti fabricQuick-drying costume, sunscreen resistant (does not fade)Padded cups with push up refill (available in all sizes)Colors emphasize tanSmooth and embossed fabric - a fashionable combinationStraps tied around the neckThe perimeter is fixed with a clip. water up to 30 degrees.