REPLACEMENT COVER – Extend the life of your dog bed, by replacing its cover. This pet duvet will fit on any brand of mattress (not included) 30-31-inches-long, 19-21-inches-wide, and 3-4-inches tall. COZY MATERIALS – This durable dog bed slip cover has a super cozy Sherpa top for your pet to snuggle into. The gray micro suede exterior will easily blend into your existing home décor and keep your precious pet snoozing in comfort and style. NON-SKID BOTTOM – This versatile pet bed replacement cover features a non-slip bottom that will keep the dog mat in place on any flooring type and make it easy for your pets of all ages to safely step on and off. REMOVABLE AND MACHINE WASHABLE COVER – This dog bed cover has a full-length zipper running along both sides for easy insertion and is machine washable. You can also use it to create a DIY dog bed by filling it with stuffed animals or blankets. PRODUCT DETAILS – Materials: 160GSM Micro Suede Fabric and 200GSM Polyester Sherpa. Dog Bed Case Covers Mattresses (not included): (L) 30-31” x (W) 19-21” x (H) 3-4”. Note: Pet Bed Duvet Cover Will Fit Loose on Smaller Sized Mats. Color: Gray.