82% Polyester/18% SpandexReference Size: X-Large usually fit 14W??XX-Large usually fit 16W-18W??3X-Large usually fit 18W-20W??4X-Large usually fit 20W-22W. Model in the Picture With( Bust 41,waist 31,hip 45) is Wearing 1X.One piece Bikinis swimsuit Made of 82% polyester, 18% spandex,skin-friendly and stretch to wear,durable and breathable,best choice for swimwear.Cut out design will keep you focus on your swimming,knot front detail just for decorative effect,adds something interesting to the swimsuit,pretty as well as unique.Soft Removable padding bra offers great support and enhance your shape,two adjustable Spaghetti straps very secure and pretty,also helps you push up.Backless design easy to put on or take off??also keep you pleasantly cool in hot summer.This plus size swimsuit?suit for most of the occasions,endows you special feeling about confidence, beauty and joy in vacation, honeymoon, beach trip, pool party and various water activities.