Victoria Malinsa Women's Ruffle Wavy Bikini Bottom Low Rise Hipster Allure Swimsuit New Added XL szie:XL 36--40in/(90--100cm);;Made of Spandex and Nylon;;Spring-type Sewing Technology maintains Bikini high elasticity. fit Low Waist Line: L 33 --37.5 in / (84--94cm);; fit Low Waist Line: M 30.5--35 in / (78--88cm); fit Low Waist Line: S 28.5--32.5 in / (72--82cm); fit Low Waist Line: XS 26.5--31 in / (68--78cm);;High elasticity of bottoms, If the bottom is little tight, you can Stretch its waist and leg circumference 3-6 times, and it will improve your feellings;;;If you are not sure what your size is,please choose a bigger one.