Valentina Valentti Self Heating Thermal Pet Pad, Rug or Bed for Cats and Large Dogs, Large Size Valentina Valentti Self Heating Pet Pads are a great innovation. They use space age technology, super reflective thermal insert that reflects your pet's body heat back towards them. Made of super soft faux lambswool upper material that is easily removed for washing, bottom part uses a non-slip base for stability. The pads fit all popular sizes of dog crate or can be used on its own on the floor. Easy wash and care.