Made from our signature blend of ultra-soft and durable fabric using TENCEL Lyocell, our 1.0-tog all-season sleep sack keeps your baby warm and cozy all night long. Designed specifically for bedtime and naptime, this clever solution cannot be removed by baby, allowing for a more restful sleep for baby and parents! It features a two-way zipper that opens around the bottom for easy diaper changes and a sleeveless design that allows babies to move their arms freely. Insulated with lightweight Dupont Sorona, it keeps your baby safe and warm. Made in an OEKO-TEX Standard 100 certified factory, you can be sure that our sleep sacks are free from toxic chemicals and always safe for your baby.