Made from top quality goose feathers and down for that extra soft feel. 85% white goose feathers 15% white goose down. All our natural duvets are pocketed to prevent cold areas, with 100% cambric cotton double stitched and piped casing. "The All Seasons duvet is composed by two duvets one 4.5tog for summer, one 9tog for spring and autumn, in winter simply join them together with the plastic poppers for a very warm 13.5tog duvet". Single, Double, King, Super King