Struggling to get the temperature just right? Say hello to Sleep Sack Ideal Temp - the only temperature regulating sleeping bag. Made from smart fabric, Ideal Temp helps to keep them at a comfortable temperature at any time of year. It takes the guesswork out of how to dress your baby for sleep regardless of the season. , , Ideal Temp uses IntelliThread technology, which absorbs excess heat from your baby when they're warmer. This heat is then stored within the smart fabric, and released back to your baby if their temp dips. The result? It helps them to maintain an ideal, more consistent temperature throughout sleep. IntelliThread fibres are embedded in the fabric, so they'll never wash out or fade. , Includes a bottom-to-top zip for easy nappy changes, as well as scratch-free zip covers. The roomy sack design is recognised by the International Hip Dysplasia Institute as promoting healthy hip development. Soft and cosy performance fabric is ideal for all temperatures. Use over regular sleepwear. , In very hot weather or a heatwave, babies need fewer layers; just a vest or nappy is fine. If your babe is sweaty, remove some layers and/or use a lighter weight sleeping bag.