100% Micro-Fleece The original wearable blanket replaces loose blankets in the crib for a safer environment; the 3-way swaddle ensures your baby's best sleep and an easy transition when it's time to stop swaddling; number 1 choice of hospital nurseries to promote safe sleep Made with 100% polyester micro-fleece fabric, super-soft and plush inside and out and designed to wick away moisture; TOG Rating of 3.0 is ideal for chilly seasons and climates and keeping newborns warm and comfortable in any climate Generously sized swaddle fasteners offer adjustability for a perfect fit; 3-way adjustable swaddle allows Arms-In to reduce startle reflex, Hands-to-Face for self-soothing, and 1 Or 2 Arms Out for easy transition from swaddling to Halo's SleepSack Inverted zipper opens from the bottom for easy diaper changes without undoing the swaddle; sleeveless to reduce the risk of overheating; arm and neck openings sized for a safer fit Available here in Small size designed for babies weighing between 13 and 18 pounds who are generally 3-6 months old and 23-26 inches long; discontinue swaddling when the baby shows signs of rolling over or breaking out of the swaddle wrap The original HALO SleepSack Swaddle is the hospital-trusted choice designed to help babies sleep safely and soundly. Made from soft, plush microfleece with a TOG 3.0 rating, it provides cozy warmth in cooler nursery temperatures (61–64 °F) without the need for loose blankets. This versatile 3-in-1 swaddle allows parents to wrap baby arms in, hands-to-face, or arms out as they grow and their sleep needs change. Strong adjustable fasteners create a secure fit, while the sleeveless, roomy sack design supports healthy hip development and is recognized as “Hip Healthy” by the International Hip Dysplasia Institute. For tired parents, thoughtful details make all the difference. A two-way zipper opens from the bottom for quick and quiet nighttime diaper changes without fully removing the swaddle. Trusted by over 1,800 hospitals and millions of parents, the HALO SleepSack Swaddle replaces loose blankets in the crib, giving your newborn a safer, cozier, and more restful night’s sleep.