Two tone flannel duvet cover thick warm and cosy 170 gm preshrunk for reliable washing flannel is known for its warmth and comfort making it ideal for cold winters 100 cottontwo tone flannel duvet cover thick warm and cosy 170 gm preshrunk for reliable washing flannel is known for its warmth and comfort making it ideal for cold winters 100 cottonwide envelope style opening excellent colourfastness after repeated washing at 60