The Slumberdown Control 4.5 Tog Summer Duvet cleverly regulates your temperature, so you don’t get too hot or too cold as you sleep. Containing a scientifically proven Dacron hollow fibre fill, this specially developed filling has been formulated to carry excess heat and moisture away from the surface of the duvet – drawing it from your body so you keep it at a regular temperature. The more heat you generate, the harder the filling will work to keep you cool. But if you’re already cool, the clever Dacron hollow fibre filling won’t allow you to get too cold either. Being a lightweight 4.5 tog duvet, it's great for warmer months or if you prefer a cooler, less heavy duvet. The Control pillow pair complements your new single Control duvet perfectly. Containing the same clever Dacron hollow fibre fill, the pillows will carry excess heat and moisture away from the surface of the pillow – drawing it from your head so you keep it at a regular temperature. As well as helping you have a comfortable night, you can also sleep easy knowing that there's nothing in this Control duvet and pillow pair bundle that could cause allergic reactions, as they’re all naturally hypoallergenic.