The Klymit Insulated Klymaloft™ Peak Sleeping Pad takes ultimate sleep comfort and elevates it with serious, four-season performance. This innovative hybrid design combines a plush foam topper that contours to your body and relieves pressure points with supportive, stable I-beam air chambers that maintain loft and structure. With an impressive ASTM R-value of 7.0, it is engineered to trap heat, eliminate cold spots, and deliver consistent, mattress-like support for back, side, or stomach sleepers from summer nights to sub-freezing winter conditions.