Therm-a-Rest
Therm-a-Rest ProLite Plus (Regular)
Where it fits
- Also works for
- Backpacking and wild camping
- Not for
- Bikepacking, Winter mountain
Why these labels
- Backpacking and wild camping: Light to carry: 0.7 kg
- Bikepacking: Bulky for bike bags: packs to 6.4 litres
- Winter mountain: R-value 3.2: too little insulation on frozen ground
From the maker's stated use and the published specs.
- Summer wild camp: 4/10 UK, roughly May to September, nights above about 8 °C, sheltered pitches.
- Three-season hills: 5/10 UK hills in spring and autumn. Wind, rain, and nights near freezing.
- Winter camp: 4/10 UK winter or high ground. Below freezing, strong wind, possibly snow. Capped at 4: needs warmth 7+ (R 4 or more).
- Weight: 5/10 How much it adds to your pack, compared with the whole market.
R-value 3.2 (ASTM).
Lowest price we found
£101.99 at Ultralight Outdoor Gear
Go to Ultralight Outdoor Gear Compare 2 shopsSpring and autumn camps where you want a simple pad that is warmer than a foam mat
- Valve
- WingLock valve
- Type
- Self-inflating
- R-value
- 3.2 (ASTM)
- Weight
- 650 g (Regular)
- Thickness
- 3.8 cm
- Size
- 183 x 51 cm
Packed size 6.4 L, 28 cm long and 17 cm across Compare with a 2-litre bottle
About as long as a 2-litre bottle and about one and a half times as wide. Drawn to scale.
Where to buy
Ultralight Outdoor Gear £101.99 In stock. Free delivery. Free UK delivery over £15.
View at shop: Ultralight Outdoor GearWoodlore £105 In stock. Delivery charge shown at checkout; free over £300.
View at shop: WoodlorePrices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More
Our ratings (out of 10)
1 to 10, compared with the whole market. Each says what it's based on. How we score
Warmth
From maker's figures 5/10How well it stops the cold ground chilling you. 5: Does the job. Average for wild-camping gear.
Maker's R-value of 3.2 (Therm-a-Rest's FAQ says it rates its pads to ASTM F3340-18) sits in the R 3–3.9 band: fine for spring and autumn, not winter. Older reviews quote R 3.4 or 3.8 from before the ASTM test; we use 3.2.
Thickness
From maker's figures 3/10How deep it is. Deeper is comfier, above all for side sleepers. 3: Below average. Fine for some trips, not others.
3.8 cm thick.
Quietness
Estimate from maker's specs: mat type (fewer than 3 reviews about noise) 7/10How little it crinkles or squeaks when you turn over. 7: Better than most.
No review we found says how noisy it is, so this is an estimate from the mat type.
Weight
From maker's figures 5/10How much it adds to your pack. 5: Does the job. Average for wild-camping gear.
Maker's 650 g sits in the 550–749 g band. Ultralight Outdoor Gear lists 694 g ex stuff sack.
Packed size
From maker's figures 3/10How much room it takes in or on your rucksack. 3: Below average. Fine for some trips, not others.
Packs to a roll 28 cm long and 17 cm across: 3.1416 x 8.5 x 8.5 x 28 = 6,356 cm³, about 6.4 L, in the 4–6.9 L band.
In short
Good for
- Spring and autumn camps where you want a simple pad that is warmer than a foam mat
- Back sleepers and anyone who likes a firm, flat pad rather than a bouncy air bed
- Walkers who want a pad that still works as a thin foam mat if punctured
Strengths
- R 3.2 in a full-length pad of 650 g
- Self-inflating foam core, topped up with a few breaths, so no pump sack to carry
- 50D polyester fabric (Therm-a-Rest)
- Foam core keeps some insulation if it is punctured; limited lifetime warranty
- Also sold in a Small (119 cm) and a Large
Weaknesses
- Only 3.8 cm thick: side sleepers may feel their hips on hard ground
- Heavier and bulkier than an inflatable of similar warmth: 650 g and about 6.4 L packed
- R 3.2 is not enough alone for winter
- The reviews we found date from 2015 to 2019 and list an older R-value or weight, so comfort and durability are estimates, not reviewed scores
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.