Camping air mattress vs sleeping pad vs cot: which to pack

For car camping in mild weather, an air mattress gives the most bed-like comfort. For cold ground, backpacking or anything you carry, a sleeping pad wins: pads carry a tested R-value for warmth, while a big air bed fills with cold air. A cot suits anyone who wants to be off the ground.

Air bed, sleeping pad or cot at a glance

Why an air mattress feels cold at camp

A queen air bed holds a lot of air. By night that air sits at the temperature of the ground and the tent, so you lie on a large, cool layer with nothing to stop the heat leaving your body. Outwell’s airbed manual says a bed loses some pressure in cold weather because the air contracts, and Intex’s manual says temperature changes can lower the pressure inside a bed. That is why a bed filled in the afternoon can feel half-flat by 3 a.m.

The fix is insulation between you and the air bed: an insulated pad, a foam topper or blankets on top of the mattress, then your sleeping bag. Insulation under the bed on its own does not warm the air already inside it.

What an R-value means

R-value measures how well a pad resists heat flowing from your body to the ground; the higher the number, the warmer the pad. For years each brand tested its own way. The ASTM F3340 standard, finalized and published in 2019 according to Therm-a-Rest maker Cascade Designs, set one test method so R-values from different brands can be compared.

NEMO, another pad maker involved in the standard, gives two practical rules:

• Match the R-value to the temperature. Choose a lower R-value in warm weather and a higher one in cold weather.
• R-values add up. An air pad stacked on a closed-cell foam pad gives the sum of their R-values. Temperature ratings cannot be added this way.

Home-style air beds, including camping queens, generally do not publish an ASTM F3340 R-value, so treat them as uninsulated unless the maker says otherwise.

Inflatable and self-inflating sleeping pads

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Choosing a camping air mattress

If you want a real bed in the tent, look at camping-specific models rather than a raised guest bed:

• Height. Camping beds are lower. SoundAsleep’s Camping Series queen is 9 inches tall, against 19 inches for its Dream Series guest bed.
• Size. Camping queens can be smaller than a standard queen: SoundAsleep’s is 78 x 58 inches, against 60 x 80 for a standard queen. Check it against the tent floor, not just the tent’s sleeping-capacity label.
• Pump. SoundAsleep ships its camping queen with a rechargeable external pump that inflates and deflates it. Intex’s TruAire camping mats come with a USB pump. Coleman’s QuickPump 4D runs on four D-cell batteries, and Coleman pitches it at single-high airbeds.

The air mattress pump guide covers valves and battery pumps in more detail, and the sizes guide lists standard dimensions.

Camping air mattresses

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When a cot makes sense

A cot lifts you off the ground on a frame and has no air to lose overnight. That suits campers who find getting up from the floor hard, or anyone tired of topping up an air bed. The trade-offs are weight and bulk, and cold air can still circulate underneath, so a pad on the cot is the usual answer in cool weather.

Car, SUV and truck bed air mattresses

Sleeping in the back of a vehicle turns the question into one of fit. Air mattresses sold for cars, SUVs and truck beds are cut to those spaces, and a standard 60 inch wide queen may not fit between the wheel wells.

Take three measurements before you buy:

1. Length of the flat floor, with the rear seats folded or the tailgate closed.
2. Width, at the narrowest point: between the wheel wells in a truck bed or SUV.
3. Height to the ceiling, canopy or tonneau cover, so you can sit up.

Compare them with the inflated size on the maker page. Intex notes that air bed sizes are approximate and include a side bulge, so leave a little room. A rechargeable or 12V pump suits a car better than a 120V one.

Keeping the bed up all night

At camp, a soft bed by morning is usually cold air or new vinyl stretch, not a hole: Intex says new vinyl stretches for its first few uses. Inflate it at home the day before your first trip. If it keeps losing air, find and fix the leak with soapy water before you pack it again.

Gifts for campers

For Father’s Day, a graduation or a first camping trip, the most useful gifts fix the common problems above:

• An insulated sleeping pad with a listed R-value, for warmth on cold ground.
• A rechargeable air pump, so the camper is not tied to an outlet or a car battery.
• A repair kit, for the pinhole that turns up at camp.
• A camping air mattress sized for their tent or vehicle, as the bigger gift: check the measurements above first.

For home and guest beds, go back to the air mattress overview.