Jump to: Our Verdict / Features / Specifications
We're working out what we think - we'll add our view here!
Rab says:
Lightweight, packable insulated air mat for alpinists and mountain expeditions where both warmth and low weight are crucial to success. With heat-reflective TILT and Stratus™ R insulation, it allows you to catch vital rest when the temperature drops.
Our Verdict
We're working out what we think about Rab's Ionosphere 5 Sleeping Mat - Long Wide We'll add our comments here in due course.
- Reviewed by Ultralight Outdoor Gear
Features
- TILT reflective film within the insulation helps reduce radiant heat loss
- 20D recycled polyester upper
- 30D recycled polyester base for added durability
- Lightweight construction uses air and insulation for superb warmth-to-weight ratio and minimal pack size
- Oversized outer chambers help keep you centralised on the mat
- Low-profile two-way valve for easy inflation and deflation
- Pump sack included for rapid and hygienic inflation
- Roll-away stuff sack with repair kit included
Specifications
- Weight: 729g
- R-Value: 4.8
- Thickness: 8cm
- Dimensions: 196x64cm
- Packed size: Regular 28x12cm
ASTM R-Value:
From 2020, there is a new industry standard for measuring the R-value (level of insulation) of sleeping mats – ASTM F3340-18. This new standard is the sleeping mat equivalent to the EN rating for sleeping bags.
You can now directly compare the R-value of mats rated using the ASTM F3340-18 with confidence that is a fair and accurate comparison between mats. In simple terms, the higher the R-value, the warmer the mat.
In general terms, an R-value below 2.0 is for summer use, 2.0 to 4.0 is for cooler 3 season use and 4.0+ is for winter temperatures. This will be also be dependent on your sleeping bag, how cold you sleep etc. Please contact our customer service team if you need advice on choosing the right mat for your activity.
Material & Construction
- Stratus™ R insulation traps air and reduces heat loss from convective currents
- 100% Polyester Inflatable Mattress
