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I have a self-inflating mat, and I think the foam serves three purposes. In order of importance: It sets the shape of the mat when inflated. Think of the foam as limiting how far the opposite wa...
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#1: Attribution notice removed
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System
·
2020-06-03T15:54:15Z (over 4 years ago)
Source: https://outdoors.stackexchange.com/a/3624 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/