100% Merino Wool Lining / 100% Organic Cotton Outer Imported #1 RATED Merino wool baby sleep sack – BEST-SELLING merino wool and organic cotton sleep sack since 2010, trusted by parents for safe sleep, comfort, and durability. Award-winning baby sleep bag (Creative Child Top Choice, Cribsie Award, Mom’s Choice Award) SAFER AND BETTER SLEEP - Premium natural fabrics: 100% Australian merino wool lining, GOTS certified organic cotton outer. Luxuriously soft, temperature-regulating merino wool helps prevent overheating and chills, reducing wake-ups and supporting deeper, longer sleep for babies. Best sleep sack for cold nights, warm rooms, and fluctuating nursery temperatures THE ONE AND ONLY baby sleeping bag your baby will need until they turn two. No TOG guesswork. One UNIVERSAL SIZE sleep sack fits 2 months to 2 years. Replaces multiple TOG sleep sacks as superfine merino wool provides year-round comfort MAXIMUM VERSATILITY - Double shoulder snaps and two-way zipper for easy dressing and easy diaper changes; Seat-belt openings allow EASY TRANSFER from crib to stroller or car seat. Under-arm snaps allow this wearable blanket to grow with your baby and make it an effective swaddle transition product TRUSTED QUALITY - Designed by a trusted US company and backed by an industry leading product warranty for your peace of mind. Made from 100% natural materials and fully OEKO-TEX STANDARD 100 certified (23.HUS.59156)