Snoozer Outlast Dog Bed Sleep System 3-Inch Thick, Medium, Herringbone/Black Excellent support for dogs of all ages, including older dogs Inner liner made with space-aged Outlast technology so your pet is Not too Hot, Not too Cold 3 inch High density extra thick convoluted foam Includes Odor Audios- Odor eliminating proprietary fabric insert that is machine washable, and outperforms messy baking soda or granulated carbon Removable/washable cover made of luxury micro suede with accent piping, SMALL: 15"x22"x3", MEDIUM: 18"x26"x3", LARGE: 23"x36"x3", X-LARGE: 26"x42"x3