
Exped
MegaMat Series
Car camping comfort king; warm and durable.

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It's a Qomotop, but I don't see them for sale anymore. Really, just look for any self-inflating pad, then look at reviews. The valve on mine looks like this one, which is a Forest Dawn on Amazon. Sea to Summit seems to have some good prices now. Mine is 4 inches thick. https://preview.redd.it/4yybdcuyugef1.jpeg?width=829&format=pjpg&auto=webp&s=543cb29673b12eb77528047244ced74433ba6de5
I just bought a used Sea to Summit of Poshmark for $25. Had a small leak that was easy to fix. Just set it up in the house and seems really comfortable. Packs up small
I used a Therm-a-rest in 1994 and, more than 30 years later, I don't see any reason to choose something else. I stopped using those for backpacking trips in favor of ultralight inflatable sleeping pads (which you DO NOT inflate with an electronic pump) because they are so much lighter, but for something like drum corps where you are using it every day and you aren't carrying it in a pack up a mountain, it's Therm-a-rest (or similar self-inflating pad from many other brands, e.g. Sea to Summit) all the way. They are more comfortable than a close-cell foam pad, still lightweight, relatively durable, and you won't have to be screwing around with a pump when you just want to be sleeping after a 3 AM bus arrival.
We use fold up carton type mats as our base. Then in our tent we have Sea to Summit self-inflating bed rolls. Our kids have the same base and use Therm-o-rest self-inflating ground mats. We find as long as we stay on the self-inflating mats, we’re pretty comfortable. The ther-o-rests are almost 20 years old and still in great shape. We upgraded to Sea to Summit because they fold up so small for backpacking
Look for an insulated inflatable mat, or a self-inflating one. I love my Sea to Summit self inflating mat. If he’s car camping, a pie iron is a very versatile option for cooking over the campfire.
I have a sea to summit self inflator. Used it for two seasons still good so far. Was quite warm when the ground was cold and never had a problem with it leaking. When it first comes out of the pack you may have to pump it up a bit by hand but when the foam finally settles and stretches it works good Edit: I did get the regular square size and it folds up pretty small as wel. I've used it out of planting also for backcountry camping and it works great, is not too heavy either.
Maybe you could get an electric air pump with a blow and suck function. I guess I never had to take it on a plane so I just used my body weight to shrink it down. Open the valve, fold in half, and roll up starting from the opposite end of the valve with my knees on it as I rolled it up.

Exped
MegaMat Series
Car camping comfort king; warm and durable.

NEMO
Tensor Series
Lightweight side sleeper favorite, but polarizing on warmth and noise.

Exped
Ultra Series
Comfortable, quiet side sleeper pad; compact for backpacking.

Big Agnes
Rapide SL Insulated Sleeping Pad
Comfortable with unique side rails; R-value and durability disputed.

Therm-a-Rest
NeoLoft™ Sleeping Pad
Very comfortable; a bit heavy and bulky for backpacking.

Ranked #1
Exped - MegaMat Series

Ranked #1
Exped - MegaMat Series

Ranked #1
Exped - MegaMat Series

Ranked #1
Exped - MegaMat Series

Ranked #1
Therm-a-Rest - NeoAir Xtherm Series