100% Cotton Imported Muslin Cotton Fabric – soft, breathable, gets softer with every washing. zero pollution, safe and healthy. Separate leg design reduces the risk of stumbling. Baby can walk safely in this sleeping bag. Perfet for early walkers zip for easy dressing and diaper changes, and it’s very loose and breathable, baby won’t suffocate in his/her sleep The detachable sleeve design, adjust as needed.Suitable for room temperature: 20?-26?. Washing Guide: Hand wash(max.30??; Do not bleach; Do not dry clean; Drip drying in the side.