This like-new condition 4 Season® Ultimate Baby Sleep Bag is the perfect solution to keep your toddler warm while the sleep. It's travel friendly, too -- A closable seatbelt opening allows for easy transfer between stroller, car seat, and crib, so you can keep your baby’s sleep routine intact while on the go. Premium natural fabrics: Silky-soft hypoallergenic merino wool lining and the finest organic cotton outer. 4 Season use: Can be used year-round. It’s suitable for room temperature 63-75F (17-24C). Because of merino’s unique ability to regulate body temperature, it helps keep your baby warm when it's cold and cool when it's hot. Color: Star Gray This was only used for a month or two before my son decided he wanted to take it off.