Temperature Regulation: Sleep bags help regulate your child's body temperature during sleep by eliminating the need for blankets or sheets that can be kicked off. The 1.0 TOG rating is suitable for moderate room temperatures. Soft and Machine Washable: Made from super soft cotton, the sleep bag is gentle on your baby's skin and can be easily washed in a washing machine, making it convenient for busy parents. Easy Zip Access: The sleep bag features an easy zip access design, allowing for quick and hassle-free nappy changes during the night without having to fully remove the sleep bag. Size Options: The 18-36 months size is suitable for children weighing from 25lbs / 11.34 kg upwards and measuring 80-95cm in height, providing a comfortable fit as they grow. Overall, the Tommee Tippee Baby Sleep Bag in Sky Grey Marl offers a cozy and secure sleeping environment for your little one, promoting a sound and restful night's sleep for both babies and parents alike.