Ultra 3R Mummy

Exped 3R or 5R might be worth a try. They both come in mummy wide and have vertical baffles, which some people find more comfortable. I’ve never used an xlite, but I find the 5R comfortable for side sleeping. 

A comfort-oriented side sleeping setup that has worked well for me:  - Exped Ultra 3R LW mummy fits my height and is wide where it counts. Because the baffles run lengthwise, they “block” you into the pad and you don’t feel like you’ll fall off. (At least, I don’t. I am a tall, somewhat slender woman.)  - Put a patch of foam under the hip - prevents the feeling of bottoming out. 2 panels of switchback, a cheapo sit pad, some foam that comes with a random package - anything squishy works. The foam is key. The only reason I ever felt uncomfortable before the foam was my hip hitting the ground. No longer!  I can sleep in any position in that setup. 

My exped 3r and 5r pads are great! They are very, very comfortable. Cannot speak for the Tensor. My REI doesn’t have the Exped Ultras on the floor, they’re a website item. If REI is a long drive, order from REI online and try it on your (very clean) floor for a night. REI has a no-questions-asked return policy.  For side sleeping I recommend sleeping on the pad slightly deflated and throwing a small piece of closed-cell foam under your hip.

I wanted to add that the older model Exped Ultra 3R in wide mummy is 441 g / 15.6 oz while the new Ultra 6.5R of the same size is spec'd at 15 oz so an estimated 17 g of weight savings. My experience is that the Ultra 3R is warm enough down to about freezing temps (32F / 0C), so if one doesn't need a warmer pad then the Ultra 3R is probably good enough if one can find one still. The prices of the two are vastly different though. I paid $105 in August 2025 for the old model while the new one lists at $200. Another difference appears to be that the fabric of the top and bottom of the 2025 model is the same while the 2026 Ultra 6.5R has different fabrics for top and bottom. What that might mean is that if you like the valves on top, then you can just flip the 2025 model over since it really has no sidedness while the way the internal insulation of the 2026 may not function as well if the pad is "flipped on its back."

I’d get the 3R and supplement with a CCF pad for the occasional sub freezing trips. That’s my personal setup.

Exped Ultra is comfortable and ultralight. Pretty affordable, too. Give it a try. 

I got an Exped Ultra 3R for like $60 on r/ULgeartrade. Try this sub and FB Marketplace/Craigslist.

6'1, 260 lb side sleeper.... Exped Ultra 3R is my pad of choice for my climate, but they have some with much higher R-values. It's more comfortable, to me, than either the Nemo Tensor or Thermarest X-Lite.

I was that way until I found the right sleeping pad and pillow situation. I'm using an Exped Ultra 3R and an Exped mega pillow. It's amazing.

The new Exped Ulta 3R has similar specs and I like the vertical baffles better. There is a mummy version, but i don’t see it on their site yet.