

A thin 1/8-inch closed cell foam pad meant to go under an inflatable sleeping pad, not to replace one. It adds a little warmth and grip, keeps your main pad from sliding, and rolls up small for backpacking. Closed cell foam does not absorb water and cannot puncture flat, so it works as a backup if an air pad leaks. Rivals like the Therm-a-Rest Z Lite and Nemo Switchback are thicker accordion pads that stand alone; this one is lighter and packs smaller but offers far less cushioning on its own.
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Buyers rate it highly as a supplement to an inflatable pad rather than a standalone mat. They like the low weight, small packed size and the grip and warmth it adds underneath. The common caveat is that it offers almost no cushioning by itself.
This is a 1/8" closed cell foam sleeping pad for camping and hiking. The foam is lightweight and water-resistant, and it rolls up for carrying.
It can be used on its own for added comfort outdoors. It can also go under a main sleeping pad to keep that pad from sliding and to add a bit more insulation.