The White Noise 400 thread count bedding collection has been designed with comfort and practicality in mind. The luxurious 400 thread count 100% cotton bed linen is the perfect bedroom staple; allowing you to accessorise to the max, or keep it simple and minimalist. The 400 thread count collection has duvet cover sets, flat sheet and fitted sheets. The fitted sheets are a DEEP 16" - perfect for thick mattresses, or mattresses with toppers.