Using high quality, cool and silky cotton sateen and an innovative spinning technique, we've created this sheeting to help regulate your temperature while you sleep, no matter the season. Made from 100% cotton, Hygro technology spins the fabric to create a hollow core which traps air to insulate and keep you warm in colder temperatures. In addition, the natural construction helps to wick away moisture lost during sleep. So no matter the weather, you won't be troubled by the fluctuations in body temperature which can so easily disturb good quality sleep. Deep fitted sheets will also accommodate the depth of a standard sized mattress that's being used with a mattress topper. Sheeting sizes To fit mattress size (cm) Single, L190 x W90cm Double, L190 x W135cm King, L200 x W150cm Super king, L200 x W180cm