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Q&A What is the main purpose of the foam inside a self-inflating mat?

All self-inflating mats I have seen are self-inflating in the sense that you’re supposed to inflate them yourself. [That is, the mat self-inflates a bit, but mostly you have to breathe the air in.]...

2 answers  ·  posted 12y ago by zoul‭  ·  last activity 11y ago by System‭

Question sleeping-pads