
Exped
MegaMat Series
Car camping comfort champ, but some side sleepers find it thin.

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my partner is a very cold sleeper an got the Therm-a-rest Neoair Xlite NXT MAX 4,5 for a Norway trip. I´ve used the same pad. We had 11 days in the tent and we slept very well! never been cold. It packs small and is reasonably light.
I couldn’t agree more. The width would be fine on a foam pad but as an inflatable my arms would still slide off the sides. I have tested this by laying on the spot of my regular wide Therm-a-Rest pad where it is the same width. So I’m still on the hunt for a good deal on a used wide pad. So far no luck.
I can tell you that I was cold pretty quickly at -6 Celsius on a short x-lite. At those temperatures I wouldn’t be caught without my x-therm.
At some point I stopped counting grams and just decided I'm brining the Regular Wide ThermARest XLite. The wide is key for a slide sleeper like me. The uberlite was amazing for saving weight and still having the size but sadly like most folks uberlites a micro hole put it out of commission. Recovery/Sleep is more important than slight amounts of weight.
I bought the good ole yellow thermarest NeoAir XLite, the wide version. The trick that works for me is to inflate it almost all the way, kneel on it with one knee & open the vent until my knee touches the ground & then close it, it will feel too under inflated, but its the perfect side sleeping softness for my fat ass. A good pillow makes a huge difference.
I'm (43F) closer to 300lbs & the good old yellow Therm-a-Rest NeoAir XLite Wide works great for my fat ass (you may or may not need the wide, it just depends on how wide your shoulders are). The trick for me, is to blow it up most of the way, kneel on it with one knee & then deflate until that knee just touches the ground, then just close it up & its perfect to sleep on, obviously ymmv, but I found its less about the pad & more about the inflation.
I used both and preferred the Nemo. My Thermarest air outlet sprung a slow leak. I prefer the Nemo rectangular shape to the tapered mummy shape of the Thermarest. Edit: I endured three punctures on the pct and I would never use an inflatable pad again. I went to a foam pad and it was so much nicer. Dealing with the inflatable was a giant hassle for me. The foam pad is indestructible and my sleep was identical Edit: I tracked my sleep across 180+ nights using my watch and ran a statistical analysis (regression) to determine the factors that influenced my sleep. Whether I used a foam pad or an inflatable mattress was NOT STATISTICALLY SIGNIFICANT with a negligible r squared. Basically it meant I slept the exact same regardless of foam or inflatable pad. It didn’t matter.
The Exped is much quieter than the thermarest, I tried both locally. They are very crunchy, it's like lying on a chip bag (noise that is). Comfort is going to be based on your preference for horizontal vs vertical baffles. If you use a tandem bag, consider the pad height of the other half of that before buying a Neoloft, they are very tall and I am told they sleep cold.
Exped megamat ultra or thermarest neoloft. The tops have some stretch/give which allows my shoulder/hip to settle in well. I like the vertical baffling on the exped but you can try both at an REI and see which you prefer.

Exped
MegaMat Series
Car camping comfort champ, but some side sleepers find it thin.

Exped
Ultra Series
Lightweight side-sleeper comfort, but a bit pricey and bulky.

NEMO
Tensor Series
Ultralight side-sleeper comfort, but slippery and prone to leaks.

Big Agnes
Rapide SL Insulated Sleeping Pad
Comfortable with side rails, but heavy and warmth claims disputed.

Therm-a-Rest
NeoLoft™ Sleeping Pad
Very comfortable, good service, but 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