Raised Bedding allows cold air to flow under the Bed while the Pet stays warm. Rosella Dog Beds have been around for more than 20 years & many originals are still in use today. Solid 12mm steel rod corners interconnected with steel tube & 600denier polyester covers that are easily replaced. The Bed can be washed down with soapy water. Follow the easy instruction to assemble in only 3 minutes with No tools required.