Thermarest ProLite

From £76.50
£85.00
Save 10%

Inflatable 2.5cm thick camping mat offering three-season comfort with a priority on minimal weight and maximum compactness. US R value is 2.4 (= 4.2 Tog). Two lengths and Women's.

Thermarest ProLite

Regular
£90.00
£100.00
Save 10%
2 In Stock
Small
£76.50
£85.00
Save 10%
2 In Stock
Women's
£90.00
£100.00
Save 10%
2 In Stock

Inflatable 2.5cm thick camping mat offering three-season comfort with a priority on minimal weight and maximum compactness with die-cut foam that eliminates excess weight and rolls up ultra-compact. Bottom grips and textured top surface hold the mattress in place while you sleep.

Now featuring exclusive Atmos™ Foam to further reduce weight and boost compressibility, the ProLite is the lightest and most compact three-season mattress available. Self-inflation keeps set-up super-easy and its die-cut foam packs small, easily fitting inside the most ultralight packs. It™s ideal for high-mileage, high-speed journeys where every gram counts.

  • Lightweight: The lightest self-inflating mattress available.
  • Efficient Warmth: Diagonal-cut channels in the foam reduce bulk and retain heat better than straight-cut foam.
  • Highly Packable: Ultralight, diagonal-cut Atmos Foam and a tapered shape keep the ProLite mattress extremely pack friendly.
  • Self-Inflating: Expanding foam core self-inflates; top off with just a few breaths for personalised firmness.

US R value is 2.4 (= 4.2 Tog), though, due to clever design, the Women's is a little warmer.

Stuff sack included.

Thermarest Prolite Dimensions Packed Weight R Value
Regular 183cm x 51cm x 3.8cm 28cm x 10cm 480g 2.4
Small 119cm x 51cm x 3.8cm 28cm x 8cm 335g 2.4
Women's 168cm x 51cm x 3.8cm 28cm x 10cm 480g 3
Togs and R Values: Typically used in the British textile industry, one Tog corresponds to the heat insulation capability of clothing etc which maintains a temperature difference of 0.1°Kelvin while passing a heat flux of 1 Watt/m2*. Some manufacturers (mainly US ones) give an R Value for the insulation properties of their mats. By this they mean an imperial equivalent (°F-ft2-h/Btu). To convert Imperial R values to Togs, multiply by 1.76228. To confuse matters there is also a metric R value, more properly called an RSI value (10 Togs = 1 RSI).
 
The higher the Tog or R (or RSI) value the better the insulation provided.
 
If you aren't totally confused by the above you should add to the mix that testing for R/Tog/RSI ratings is not by any means an exact science and that it is also expensive so, it is alleged, some figures that are given may be acquired by doing little more than taking a competitor's figure and adding a pinch for good measure. Of course, who is alleging what about whom is also not easy to ascertain!
 
*NB One Tog was originally a war time measurement of the amount of warmth retained by a typical male wearing a three piece suit - it originated from research done in the North of England - hence the term tog (though this in turn is thought to originate from the Roman word toga)!

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