This self-warming bed is perfect for any time of the year. It is soft, fluffy and inviting - and soon it will be warm! The self-warming lounge sleeper is the perfect snuggle spot for a smaller pet. The exterior of this bed is made of a durable and attractive poly/cotton and it is lined with a plush microfleece your pet will love curling up in. The overstuffed bolster surrounding the bed perfectly complements the soft, pillow-like sleeping surface. This self-warming bed has a layer of metalized insulation that radiates warmth generated from the pets own body heat and is filled with a soft, premium polyfil made from recycled plastic bottles. The bottom of the bed has a layer of "stay put" non-slip fabric. This version of the self-warming lounge sleeper is available in one size and two colors combinations. By popular demand, there is now an additional version of this great bed that is available in two size/color combinations (see chart below).