Pack includes 5 pairs of solid bikini underwear. Elasticized cross-front waistband. Super-soft cotton jersey, with comfortable stretch. Maternity bikini underwear sits under belly. 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 (numeric size 8). Machine wash cold, tumble dry low. spandex 5% cotton 95% .