This Slumberdown 3 in 1 king duvet is great for all year use. A 4.5 tog duvet for summer and a 9 tog duvet for spring and autumn, which fasten together with poppers to make a 13.5 tog duvet that is perfect for winter. The Polycotton filling is Non Allergenic, so this duvet is the perfect choice for allergy sufferers. :: Customer Review = 4.75
