A customer favorite and must-have for every nursery, our 2.5-tog sleep bag is made of ultra-soft and thermo regulating TENCEL Lyocell and DuPont Sorona filling for cozy, kick-proof comfort. With thoughtful features like a 2-way zipper, sleeveless design, and Sorona insulation, it?s an essential parents trust?and keep coming back for.Gentle on sensitive skin and the planet, TENCEL? Lyocellcontains biodegradable fibers made from responsibly sourced eucalyptus tree pulp. It's made using a closed-loop production process where 99.5% of the solvents are reused during manufacturing, helping to minimize waste.94% TENCEL? Lyocell, 6% spandex