Designed to be worn over pyjamas, aden + anais™ cotton muslin baby sleeping bags 1 TOG eliminate the need for loose blankets in the cot for a safer sleep. The single layer of breathable muslin also helps reduce the risk of overheating, ensuring a peaceful sleep for baby and you. The sleeping bag’s zipper opens from the bottom, making nighttime changes easy. The light cotton sleeping bag is perfect for room temperatures between 22-24°C.