includes 2 pairs of brief underwear rollover waistband panel rolls up or down for added support fitted through body XS = sizes 0-2; S = sizes 4-6; M = sizes 8-10; L = sizes 12-14; XL = sizes 16-18; XXL = size 20 model is approximately 5'9" and wears a size M (8)Machine wash cold, tumble dry low. spandex 5% cotton 95% .