DOUBLE FLAT SHEET - a double flat sheet (230cm x 260cm) made from finest quality 100% cotton sateen. Pair with Christy 400TC duvet sets and pillow cases. SOFT AND SILKY - this sumptuous Christy bed linen is made from high quality, breathable, cotton sateen, with a natural sheen that provides a wonderfully soft and silky feel. 400 THREAD COUNT COTTON - our luxurious plain dye bedding is made from high quality 400 thread count cotton. Choose from a refined palette of sophisticated hues. OEKO-TEX MADE IN GREEN CERTIFIED - the factories that make our products have been independently certified for their environmentally friendly techniques and socially responsible working standards. 170 YEARS OF TEXTILES - elevating the everyday since 1850. For 170 years, we've had an uncompromising design philosophy, to craft high quality, beautiful products that are made to last.