7.4 oz./yd² (US), 12.4 oz/L yd (CA), 60/40 combed ringspun cotton/polyester; Three-end fleece fabric with 100% cotton face; Heather & Natural Heather: 55/45 cotton/polyester; Infant fit; Heavy-gauge rib binding for comfort and durability; YKK Snap Tape at back neck for easy on/off; YKK Snap Tape closure;