Sweet dreams start with the 4Knines Waterproof Dog Bed Liner. Designed to keep the inside of your pet,s bed clean and dry, it,s the easy way to extend the life of his bed while keeping him cozy. And not only does it protect against mol, mildew and other odors that can develop if the bed gets wet, but it also protects your pet against dust mites and other allergens. And as an added bonus for you, the soft and quiet fabric is designed to minimize rustling, so you don,t have to hear every time your dog makes a move,so it,s sweet dreams for everyone in the room!