Baby sleep bags can help babies sleep better because, with no loose blankets or sheets to get tangled up in or kick off, they help little ones regulate their temperature when sleeping, so they are less likely to be disturbed by being too hot or too cold. Safer sleep is better sleep and preventing babies from overheating is an important part of safer sleep. This sleep bag range is available in four different TOGS (warmth ratings) so that you can dress your baby safely for the room temperature - 3.5 TOG - ideal for cold winter months and for cold rooms below 14C 2.5 TOG - suitable for use all year round and for room temperatures between 14-20C 1.0 TOG - ideal for use in warmer months or in rooms with temperatures between 20-24C. 0.2 TOG - ideal for heatwaves, hot weather and very warm rooms with temperatures above 24C. Choose from a variety of beautiful designs from our everyday to luxury ranges. Please refer to our What to Wear guide to ensure you dress your baby in the correct clothing under our sleep bags. Made from soft, 100% cotton-rich, fluorescent-free fabric our sleep bags are snuggly and kind on babys skin perfect for a comfortable nights sleep. Our sleep bags have been designed to be snug up top and wriggly down below - slim fitting through the chest to enable full freedom of movement without restriction or excess bulk with a roomy, hip-healthy bottom to allow your baby to adopt a natural frog-legged sleeping position, which is important for correct hip development. Should your little one need changing during the night, theres easy zip access to help you deal with those night-time nappy changes without disturbing baby or anyone else who is trying to get some much-needed rest from an independent study in April 2021 by MumsViews of 297 UK Mums, who currently use a Grobag.