Material: 100% GOTS certified Organic Cotton: Our organic cotton is 100% GOTS certified - this means that no chemicals are used throughout the production value chain. The Global Organic Textile Standard (GOTS) is the world's leading processing standard for textiles (clothing, home textiles, and personal care products) made from certified organically produced raw materials. It follows a strict environmental criteria and also social criteria for operations along the entire textile supply chain.Why Organic Cotton: Ah, the stalwart of bed linen. There’s a reason why hotels love cotton! This versatile material can be dressed up or down in the bedroom, and is best enjoyed for those who run cold in their sleep. Sheets are perfect for those with chemical sensitivities and need to wash their sheets frequently.Item Specifications: Sets feature a fitted sheet with an elastic band that fits mattresses up to 40cm deep, two pillowcases and a duvet cover with 4 twill ties at each corner.