The Premier Foam model will contain an extra layer of memory foam to help conform the mattress to your body for an added comfortable and supportive feeling. The Serta Arctic Foam and the Serta Arctic Premier Foam models will both be all-foam mattresses, and will not contain any coils. The most energy efficient air conditioner… Continue reading WWK08CW01NB in by Midea in Valentine, NE Arctic King 8000 BTU Wi-FI Window Air Conditioner