For a double/full size mattress. Only used for a short time (we purchased a larger bed) and recently cleaned. Elastic edge and extra fabric between edging and top of cover ensure this will stay put on any mattress. Machine washable! See photos for details and please let me know if you have any questions! (Shown spread out on a Queen bed). From a smoke-free, pet-friendly home. In very good used condition with minimal visible wear.