Pure Cotton: The natural fibres of cotton create a fabric that is soft and breathable. 200 Thread Count: Percale weave creates a smooth, soft hand feel. Piped Pillowcases: An elegant finishing touch. Button Fastening: To keep your duvet securely in place. King Duvet Set- 220x230 cm + 2 50x75 cm Pillowcases 100% Cotton Wash Before Use. Machine Wash at 40 Degrees. Tumble Dry Safe. Content by Terence Conran was established in 2003 by Sir Terence Conran, founder of Habitat and the Conran Shop. At Content by Conran, we believe thoughtful design really does improve the quality of our lives.