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Amazon.com : Rilextec Double Self-Inflating Sleeping Pad with 9.5 R Value, 4" Thick Insulated Camping Mattress with Memory Foam, Camping Sleeping Pads for 2 Person with Pump Sack for Tent Car Truck
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How to Increase the R-Value of Your Sleeping Pad: 4 Tips for Cozy Camping | by Trunk Outdoors | Medium
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