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Thermarest ProLite Plus

Four season 3.8 cm thick inflatable mat which combines outstanding all-season warmth with the convenience of self-inflation. US R value is 3.4 (= 6.0 Tog).


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  • Regular
  • £90.00
  • 2 in stock
  • Check Store Availability
  • Small
  • £85.50
  • 2 in stock
  • Check Store Availability
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Thermarest ProLite Plus Video


With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

You Pre-Order is prioritised (at no additional charge); meaning that, as soon as the product arrives with us, we can wrap it straight back up and get it sent out to you - it often never even hits the stock room shelves!


With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery Dates

Estimated Delivery Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery Dates provided on product pages.

The Current Estimated Delivery Dates for Thermarest ProLite Plus is

Thermarest ProLite Plus Description

  • Brand : Thermarest
  • Season : Not Applicable
  • Code : CAS PLP
  • Packaged Weight : 0.46KG
  • Four season 3.8 cm thick inflatable mat which combines outstanding all-season warmth with the convenience of self-inflation. An upgrade to the exclusive Atmos™ Foam reduces weight and boosts compressibility. In addition, patent-pending diagonal-cut foam delivers more warmth than the more common vertical channels, making it the ideal choice for ski touring, cold weather expeditions and winter camping.

    • Lighter: Atmos™ Foam reduces weight by nearly 10%.
    • Four-Season Warmth: Thick, patent-pending diagonal-cut foam offers efficient year-round comfort.
    • Ultra-Compact: Atmos Foam boosts compressibility for easy packing.
    • Self-Inflating: Expanding foam core self-inflates; top off with just a few breaths for personalized firmness.

    US R value is 3.4 (= 6.0 Tog).

    Stuff sack included.

    Thermarest Prolite Plus
    Type Dimensions Packed Weight
    Regular 183 x 51 x 3.8cm 28 x 12cm 570g
    Small 119 x 51 x 3.8cm 28 x 10cm 400g

    Buyers Guide

    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)!

    Sizing Information

    Thermarest Prolite Plus Dimensions Packed Weight
    Regular 183cm x 51cm x 3.8cm 28cm x 12cm 570g
    Small 119cm x 51cm x 3.8cm 28cm x 10cm 400g


    Technical Information

    Thermarest ProLite Plus
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