Offering an all new level of four seasons comfort, the RidgeRest Solar features an innovative aluminized coating to boost the heat trapping capabilities of the RidgeRest series to all new heights. Designed to add to the effectiveness of heat-trapping valleys & soft supportive ridges the Solar is one of the most comfortable and warmest mattresses ever made!As well as boosting overall warmth the new coating also helps boost durability to create an all round value driven mattresses for any season.All-Season Warmth: Patent-pending aluminized surface reflects radiant heat, amplifying the effectiveness of heat-trapping valleys.Travel Light: Lightweight foams reduce weight for situations when every ounce counts.Sleep Anywhere: Closed-cell foams provide unmatched durability for use on any surface without worry.