Therm-a-Rest Trailmix
Stretchy comfort, warmth, and durability at an affordable price?
The Therm-a-Rest Trailmix has been designed to deliver an approachable balance of comfort, warmth, durability, and value. It has good specs with an ASTM-tested R-value of 4.5, 7.62 cm (3 in) of thickness, a weight of 779 g (1.7 lb) on my scale, and a durable 50 denier stretch knit top fabric for the top material and 75 denier bottom material – all that with a launch price of $160 USD for the regular wide version.
My initial testing of the pad supported most of the claims. I was able to stay warm on the pad down to –5°C (23°F) on warm ground; I think this is about its limit though. I was also very comfortable on the pad. The stretchy top material is not as stretchy as with the Therm-a-Rest NeoLoft; but it provides enough give to relieve a lot of pressure, while not bottoming out. Durability seems solid and I like that Therm-a-Rest is using a non-stretch material for the bottom of the pad. The pad weighs more than I would like, and is slightly more than the advertised weight, but I think it is reasonable for most people.
The Therm-a-Rest Trailmix is expected to be available in stores for Spring 2027.
Pros and Cons
Pros
- Stretchy top material provides excellent pressure relief.
- Warmth is very good and I think the lower limit is around -5°C (23°F).
- 75 denier bottom material should be very durable.
- Price.
Cons
- Horizontal baffles limit comfort.
- 779 g (1.7 lb) is heavy for a modern backpacking pad.
- 7.62 cm (3 in) of thickness might not be enough for everyone.
Open Questions
What the full review still needs to answer.
- How is long-term durability?
- Will the 7.62 cm (3 in) limit how many people find the pad comfortable?
- Will people avoid the pad due to the weight?
Available Sizes
Scroll sideways to see every size.
More Sleeping Pad Reviews
Best Backpacking Sleeping Pads – 2026 Awards
Seven categories. Seven winners.
Bestway Ridgelite
Best budget pad on the market: warm, comfortable, and easy to use.
Bestway describes the Ridgelite as warm, comfortable, and light. During over 12 nights of testing, I have been warm below freezing and had comfortable sleeps on…
Exped Ultra 10R
Does one of the highest ASTM-tested R-values translate to real world warmth?
The Exped Ultra 10R has one of the highest ASTM-tested R-values ({{exped-ultra-10r:r-value}}) I have seen with a pad under [gp_measure value="1" unit="kg"]. Exped claims that the…