Recycle Your Dog Bed Filler! Old towels, rags, clothes, bean bag fill, shredded foam, even old dog beds that have been destroyed by your dog...these covers turn whatever you use to fill them into the most durable dog bed! With a cover made out of our signature TOUGH-FLEX BALLISTIC™ material and its resistance to odor and dirt, it is the perfect material for long lasting beds. These dog bed covers are the perfect blend of style, comfort, and durability. The design features implemented in our covers help to extend the life of our beds. There is nothing out there that is truly “indestructible” when it comes to our canine friends but these beds are definitely the most durable on the market.