Sleeping pad R-value by overnight low
Quick answerRoughly R 2 for summer, R 3 to 4 around freezing and R 5.5 or more below 20F, with about R 1 more on a cot.
| Overnight low | On the ground | On a cot | On an air mattress |
|---|---|---|---|
| 60F | R 1.5 | R 2.5 | R 2.5 |
| 50F | R 1.5 | R 2.5 | R 2.5 |
| 45F | R 2.5 | R 3.5 | R 3.5 |
| 40F | R 2.5 | R 3.5 | R 3.5 |
| 35F | R 3.5 | R 4.5 | R 4.5 |
| 30F | R 4.5 | R 5.5 | R 5.5 |
| 25F | R 4.5 | R 5.5 | R 5.5 |
| 20F | R 4.5 | R 5.5 | R 5.5 |
| 15F | R 5.5 | R 6.5 | R 6.5 |
| 10F | R 5.5 | R 6.5 | R 6.5 |
| 0F | R 6.5 | R 7.5 | R 7.5 |
Car camping sleeping pads
TaskStar 4" Self Inflating Sleeping Pad for Camping with Pillow$49.99Check priceSpec sheet
Breezcamp Self Inflating Sleeping Pad With Electric Pump$79.98Check price
Hikenture 4" Thick Self Inflating Sleeping Pad with Electric Pump$109.99Check priceSpec sheet
Elegear Self Inflating Sleeping Pad with Electric Pump 3.15" Memory$159.99Check price
Lost Horizon Option3 Self-Inflating Foam Camping Mattress$199.99Check price
Exped MegaMat Ultra Sleeping Pad$269.95Check price
Exped MegaMat Max Sleeping Pad$398.00Check price
Exped MegaMat Sleeping Pad$449.95Check price
Researched guidance, not professional advice. Figures are published specifications or clearly labelled conventions; check your own gear's manual and your campground's rules.