5.0 oz., 100% combed ringspun cotton 1x1 baby rib; Heather is 88/12 combed ringspun cotton/polyester; White is sewn with 100% cotton thread;Double needle ribbed binding on neck, armholes and bottom hem; EasyTear™ label; Machine washable/ tumble dry low; Sizing: 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.); For breeds with larger chests, purchase one size up from weight range.; Note: Bleed resistant ink is recommended when printing our camouflage products; Fit: Canine;