How do you keep your baby girl sleeping all the way through the night? By making sure they stay cosy and warm, of course! Aden and Anais' cosy muslin sleeping bag is perfect for chilly temperatures, when you want to be sure your baby is safe without the worry of loose blankets in their crib. Designed to be worn over pyjamas, this wearable blanket offers cushion-like comfort in colder seasons thanks to its premium flannel muslin made from 100% brushed cotton with a hypoallergenic fill. With a 3.5 TOG rating, this cosy sleeping bag is suitable for 15 degrees or less. Machine washable, Aden and Anais' cosy muslin sleeping bag stays soft wash after wash. Please note that our cosy muslin sleeping bag runs small. Please check the size guide for measurements.