op highlights Fleece The original wearable blanket replaces loose blankets in the crib for a safer environment; the #1 choice of hospital nurseries to promote safe sleep; now available in this larger size for bigger kids Made from a super-soft micro-fleece fabric with a TOG rating of 1.0, offers just the right comfort for moderate seasons or climates; can be layered with warmer sleepwear for cooler temperatures Unique, roomy sack design recognized by the International Hip Dysplasia Institute as "hip healthy" - allows room for kicking but cannot be kicked off, so your child stays warm all night; foot openings for mobility when awake; room to tuck in feet at night Inverted zipper opens from the bottom for easy diaper changes; sleeveless to reduce the risk of overheating; arm and neck openings sized for a safer fit Available here in 2-3T size designed for children weighing between 25 and 40 pounds who are generally 2-3 years old and 34-40 inches tall