The outside of the bed is poly/cotton and the inside is lined in soft microfleece. The pillow has a layer of metalized insulation that radiates warmth generated from the pets own body heat. A cozy lounge bed that every pet will love. Completely machine washable. Filled with premium polyfil made from recycled plastic bottles. The bottom of bed has a layer of “stay-put” non-slip fabric for stability. One year limited warranty.