Keep your pet warm this winter with Aspen Pet's® Self-Warming Corduroy Longer Beds. Featuring the same heat-reflecting technology found in Mylar space blankets, Aspen Pet Self-Warming Beds are lined with a layer of material that radiates warmth by reflecting your pet's own body heat, no plug or electricity required! The sleep surface is made up of a cozy, soft lambswool plush with a corduroy fabric making up the exterior. Overstuffed bolsters provide additional support for your pet's head, neck, and back while the non-skid bottom helps keep it in place and for stability. Easy-to-clean.