The Aspen Pet Self-Warming Oval Lounger uses a heat-reflecting inner layer, the same type of technology found in Mylar space blankets, to radiate a pet's own body heat back for warmth. The sleeping surface is finished in soft faux lambswool plush, while the exterior sides are wrapped in wide wale corduroy fabric for a cozy feel. Inside, lightweight polyester fiberfill gives the lounger its cushioned shape while keeping the bed easy to move from room to room. The base has a textured, non-skid finish designed to keep the bed steady on tile, hardwood, or other smooth flooring. No cords, plugs, or outlets are required since the warming effect comes entirely from body heat reflection rather than electricity. The cover can be cleaned separately using a gentle wash cycle with cool water and mild detergent, then fluff dried. No assembly is needed; the bed is ready to use once unpacked.