Siberian goose topper: Experience pure opulence with 100% Siberian Goose Feather Down Mattress Topper With Cover, offering unmatched comfort for the colder nights. Premium cover: Encased in 400 thread count percale Egyptian cotton, this topper boasts luxury with piped edges for added elegance. Size options: Choose from 5 sizes: single, single double, double, king and super king. Easy care: Machine washable at 40 degrees, you can also tumble dry this down topper. Year-round comfort: Enjoy being cosy and warm throughout the night with a topper designed for all seasons. Siberian Goose Feather Mattress Topper | Living Social | Living Social