PetBed4Less Heavy Duty Green Canvas Pet Bed Dog Bed Zipper Cover Small, Medium to Super Large - 8 Sizes - Replacement Zipper Cover only Heavty duty 12 oz Green color Canvas fabric is made by 100% cotton. It's very durable and comfortable. There're 8 sizes to choose. 41" Length X 27" Width X 4" Height with 3 dimension gusset style The size of this cover is designed to fit 41"x27"x4" PetBed4Less dog bed pet pad perfectly. It can fit any other brand dog bed pet pad with similar size too. It's machine washable/dry-able and long lasting. This listing is for canvas replacement cover only. Additional covers and dog beds pet pads are available at petbed4less link on the top. Please visit our Amazon storefront for all products.