5.0 oz. 100% combed ringspun cotton 1x1 baby rib; Double-needle ribbed binding on neck, legholes and bottom; White is sewn with 100% cotton thread; XS (0-4 lbs), S (5-10 lbs), M (11-23 lbs), L (24-45 lbs), XL (46-70 lbs), 2X (71-85 lbs), 3X (86+ lbs); Breeds w/larger chests, purchase 1size up from weight range; Heather is 93/7;Doggie Skins