Cotton. These luxurious cotton-rich 1000 Thread Count sheets are made from meticulously woven ultra-fine yarns. Not only do they offer superior quality and feel, making them comfortable to sleep on, but they are also quick to dry and easy to care for too. 100% quality cotton 1000 Thread count 50cm deep side-wall Includes flat sheet, fitted sheet & 2 Pillowcases Can be tumble dried at a low heat Care instructions: Wash separately before use. Wash with similar colours. Warm machine wash. Do not bleach. Dry without delay. May be tumble dried - cold. Warm iron if required. Do not dryclean.