Sleepers who enjoy sleeping cooler on a hybrid mattress that blends traditional springs with memory foam layers will love the Polaris Mattress. The Polaris CoolSync Mattress features a thick layer contouring CoolSync memory foam and zoned pocket coils for targeted support. Tying everything together is the HyperChill cover, which offers an instant cooling effect. All Malouf mattresses arrive rolled and compressed in a box.