The Cozy Cave® Crate Dog Bed with extra cover is made from upholstery-grade poly/cotton fabric and fits standard size crates (crate not included). Made to appeal to a dog’s natural instincts for burrowing, the Cozy Cave is the best dog bed for dogs who love sleeping under blankets or prefer to spend time in their own little “den.” Our dog cave bed gives them a place of their own to relax with a feeling of safety and security for less anxiety and more restful sleep. Each Cozy Cave® Crate bed has a soft and comfy sherpa lined interior, a poly/cedar filled cushion for odor and critter control, and a machine-washable cover.