How to Inflate and Deflate a Self-Inflating Camping Mattress
The essential components of a self-inflating mattress are a layer of foam that can compress and decompress and an airtight fabric envelope with a vacuum-sealed valve. The valve opens, the air gets sucked into the mat, and the foam expands. The foam provides the insulation, which also acts as a built-in pump, by enclosing air …
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