Ultra 7R Mummy

I got the Exped 7R mummy about a month ago when it was super cheap ($110). I'll be taking it out to the MD Appalachian trail in January, temps are currently projected to be a low of 13F. I'm hoping I like it because it's significantly lighter than my 5R sleeping pad.

It really depends on how cold you sleep. I'm in my 50s, don't have much fat on me and sleep quite cold, -10°C is around my cutoff for a comfortable night's rest. I have a 1-person, lightweight tent with a 4-season inner. Below 0°C I sleep with varying combinations of the following: - CCF pad - Exped Downmat HL Winter (R-value 7.1) - -15°C rated sleeping bag - bag liner (maybe another 5°C warmth) - down-fill booties and hood - wool sweater - down puffy jacket - merino base layers + wool socks - water bottle 3/4 filled with hot water and then stuffed into a spare wool sock A high carb snack and some jumping jacks before you retire for the night will help you get into bed warm.

Fellow side sleeper, do most of my camping I. Colder seasons, I’ve tried a few pads (xtherm, uber lite, sea to summit ether) and so far I have found the Exped ultra 7r in medium wide (mummy)to be the most comfy. So maybe the 5r would be good for you.

I actively dislike my summer pad (Exped UL) and sleep terribly even when exhausted so now I carry my winter mat (Exped DownMat UL) year round. It’s insulated and just enough cushier that I can sleep decently and wake up ready to roll. Hammock doesn’t work well above timberline, for those folks suggesting that option!

I've got an Exped 5R in a long/wide size. It's listed as 77.6" x 25.6" x 3". I had a 7R a couple of years ago in the same size. It was a 3.5" thick mattress though. Honestly they've been some of the comfiest sleeping pads I've owned. I'm pretty much the same size as you are as well. I'm 6'2" and 215. I've never found the size of the pad to be too short or narrow. And I toss and turn like I'm clothes in a dryer. There's plenty of thickness to keep you from sinking in even if you're a side sleeper. The only downside to the pad is it's packed size. Which is bulkier than the traditional suggested sleeping pads, but it's really not that bad for what you get. Also I just looked at the Megamat. The 5R has a higher r-value, is still 3" vs 4", but that megamat packed size isn't worth the extra space at all in my opinion. I think the bulk of the megamat will cause more problems than it solves in the long run.