Thermarest ProLite 4

• This the lightest, most compact 4-season mattress in the Thermarest line and very likely in the World!
• Its innovative new materials reduce weight by 25%.
• The tapered ergonomic design rolls up super-small, and the super-grip bottom keeps mattress from slipping.
• Small: 1lbs.1oz. (482g), Rolled Size: 11x4in. (28x10cm), R-Value: 3.2, Thickness: 1.5, Dimensions: 20x47in.
• Medium: Weight: 1lbs.8oz. (680g), Rolled: 11x4.8in (28x12cm), R-Value: 3.2, Thickenss: 1.5in. Dimensions: 10x72in.
• Large: Weight: 2lbs.1oz (936g), Rolled: 13x5.1in (33x13cm), R-Value: 3.2, Thickness:1.5in, Dimensions: 25x77in.
• Women's Regular: 1lbs.8oz. (680g), Rolled: 11x4.8in, R-Value: 4.1, Thickness: 1.5in. Dimensions: 20x66in.