Foxford Cotton Microfibre Duvet – Double 10.5 Tog Enjoy an unparalleled slumber with this Foxford Cotton Microfibre Duvet. Its premium-quality microfibre material is soft and durable, providing just the right amount of warmth for those chilly nights. Lightweight yet cosy, this double-sized duvet boasts a 10.5 tog rating for the balance of comfort and breathability. Rest assured, you'll want to leave your bed again.