Foot openings for mobility when awake; Room to tuck in feet at night; Use over regular sleepwear to take the place of loose blankets * Use over regular sleepwear to take the place of loose blankets; 100% polyester micro-fleece; Size large fits 22-28 pounds, size extra large fits 26-26 pounds * Sleeveless design reduces the risk of overheating; Generous sack design allows room for kicking, but can"t be kicked off so baby stays warm all night * Embroidery reminds caregivers to place baby on his or her back * 3 Pack