This pure wool filled duvet, or quilt inner, is made in New Zealand by Mi Woollies. It is lightweight, whilst very warm, and it will assist in giving you a healthy and comfortable nights sleep. The 100% wool fill, ‘batting’, insulation is encased in a lightweight, wool-proof, cotton outer, which has a luxurious soft finish. The duvet is constructed using channel quilting that holds the wool batting firmly in place. For your health and safety this duvet has been sanitized to prevent microbial attack, fungal and bacterial growth, as well as preventing the development of unpleasant odours. This duvet is filled with 350 gm wool which has a rating of 7 units of thermal resistance, suitable for use in spring or summer. Duvets made from 500 gm wool which are suitable for winter use are also available.