Closed-cell foam mat (second mat) on Carstensz Pyramid
Also called: Closed-cell foam sleeping pad
What it is for
A foam mat under your inflatable one, for extra insulation and as a back-up that cannot puncture. It also makes a seat in camp.
What Carstensz Pyramid asks for
Standard
Under the inflatable: insulation from the wet, rocky ground, and the backup if it punctures; it doubles as a sit mat
What to look for
- R-value (ASTM F3340)
- How well a mat stops the ground taking your heat: higher is warmer. Only figures measured to ASTM F3340 (since 2020) can be compared between brands.
Kinds
- Closed-Cell Foam Sleeping Pads
