Turn your dog's elevated cot bed from summer to winter with this warm and comfy microfleece bed topper. Elastic loop straps at each corner on the bottom secure the topper in place. This topper can be used on your dog's existing bed or it is also compatible with the Midlee Green Dog Cot with Canopy beds. Cot beds are sold separately. The fleece topper is machine washable. - Small: 18" x 24" (45.72 cm x 60.96 cm) - Medium: 24" x 30" (60.96 cm x 76.2 cm) - Large: 30" x 36" (76.2 cm x 91.44 cm) - X-Large: 36" x 48" (91.44 cm x 121.92 cm)