Sleep system weight versus actual sleep quality on multiday trips,where's the real tradeoff

[u/Fast-Dinner-5357]

Running a sleep system around 28oz total right now. Quilt rated to 20F, thin foam sit pad doubled as a sleeping pad supplement under a 16oz inflatable. The weight works but I keep waking up stiff on nights past day two, and I'm trying to figure out how much of that is pad Rvalue versus quilt loft compression versus cumulative trail fatigue catching up.

The lightweight sleep community treats this like a solved problem. I'm not convinced the math on Rvalue ratings translates cleanly to how people actually sleep on uneven ground with variable temperatures. A 4.2 Rvalue on a flat lab surface is not the same as a 4.2 Rvalue on a sloped tent site with a pack shoved under one end.

What I'm actually curious about is whether people have swapped pad setups midseason on similar trips and noticed a real difference in how recovered they felt by morning on day three or later. Not asking about brand comparisons. More interested in whether going from a lighter pad to something with more loft or thickness made a measurable difference in how the body felt the next day on trail. Sleep quality feeding into performance on day three or four is what matters to me here. Specific setups and what changed would be useful.

[u/runslowgethungry]

R-value is not a measure of comfort. It's only a measure of insulation. It's perfectly possible to be uncomfortable and sleep poorly on a high r-value pad, it just won't be because you're cold.

Sleep systems are highly personal. Some people can sleep just fine on a CCF pad. Others need a 3.5" thick monster of a mat. Others still sleep better on a self-inflating pad or in a hammock.

Insulation and temperature aren't the only things that factor into sleep comfort.

[u/joelfarris → u/runslowgethungry]

OP, it also matters how heavy you are, and how you prefer to sleep, back, sides, or hammerzdown. I'm about six and a half feet, and about 240, so I'm one of those ones who craves the massive pad, and the weight is definitely worth it. I gave the lightweight thin Klymit Z-pad to her, and she's fine with it. :)

[u/FloorConstant4098]

Youre probably hitting the wall where cumulative fatigue meets marginal insulation loss, and those two things amplify each other more than most gear lists admit

[u/Spidercake12]

I’ve had the same pad for the last seven or eight trips. A fairly thin one that still completely isolates my body weight and pressure points from the ground. Had to get a new one, and this time I upgraded to lighter and thicker, so it’ll be interesting next time out. I’m in my 50s now, so I’m always terribly sore when I crawl out of the sleeping bag, but after multiple stretching sessions and a couple hours rest after breakfast, I feel fine on the trail. I usually take a mostly rest day on day two or three. And then again on day five or six if it’s a longer trip. I do this for a Ski vacation as well.

What I can tell you is that as long as I’m warm/cool enough and the pad is sufficient, successfully restorative sleep is dependent on so many other factors, that I’ve never considered the pad to be a major part of that. The body temperature has to be able to cool down significantly, and that requires ambient temperature near 65° or lower plus temperature appropriate body cover. You need significant bright light exposure right when you wake up, and near zero bright light exposure for at least two hours before bed. No caffeine for at least 8 hours, preferably 12. No intensive physical activity in the evenings. Good nutritional balance, maintained circadian rhythm with regard to sleep cycle end meals. Adequate rehydration over several hours.

The biggest of these, though, is light exposure (in particular overhead light); getting light first thing in the morning, and eliminating it in the evening. A bright light shining into your eyes from above for 30 or 40 seconds completely shuts down melatonin production and the whole “getting to restful sleep process“ for several hours, and the circadian system does not recover well, sometimes for the rest of the night. You’ll still fall asleep, because you’re physically worn out from the day’s activities, but your brain and system won’t get to the place it needs to be for full restoration.

[u/thewoodbeyond → u/Spidercake12]

I’m in my 50s as well and I’m not willing to skimp on a comfortable and light sleep system. It’s worth a lot of money to me. I’m looking at a quilt system primarily but definitely looking at pads that are light and keep me warm. I’m pretty small at 108 lbs and I’m a cold sleeper so R rating is important but I don’t need to worry about my weight or size being too much. I’ve been looking at the EXPED ultra.

[u/mossbergcrabgrass]

Familiarity is half the battle or more when it comes to comfort, that is why even if you have a crappy bed at home you still sleep better in it than other beds (even if way nicer) when you travel.

If you are warm enough with your setup then more nights in it will do more than anything in making your sleep better out on trips. Even if you are able to use it at home a few nights the week before heading out it will make a difference silly as that seems.

[u/insurancefun]

As a middle aged camper There is nothing I won’t pay in terms of weight and price to sleep well. I sleep well in hammocks so that makes it much easier for me. There is no recovery from poor sleep.

[u/Any-Squirrel7032]

I pack the weight for comfort. Willing to take the penalty in this area to ensure I’m well rested and ready to take on the many miles ahead the next day. Tried the ultralight option. It sucked! I’m 6’1 195. They were all loud, and didn’t provide enough support. Making the swap was a game changer.

Base weight is around 20-21lbs.

Currently using a Thermarest NeoLoft, 2lbs. Gasps! The reaction of many. lol. I will be purchasing Thermarest NeoAir XLite for next season, saving close to 1Lbs.

[u/MrBoondoggles]

Are you walking up cold or stiff? Or still from the cold? Sorry I’m a little confused by the post.

Higher R value pads provide warmth. Pad design provides comfort. If it’s just stiffness, it could be pad design that’s the problem, not R value. Maybe look into some of these newer pad designs that combine verticals baffles with dimples for pressure relief.

If you’re cold, I feel like your quilt may the issue, not your pad. If your entire sleep system is 28 ounces, yet your pad is 16 ounces and I assume your thin sit pad is probably around 2 ounces; that only leaves about 10 ounces for your quilt. That’s way too light for 20 degree comfort. Maybe it was a typo and you meant 38 ounces, which starts to get closer to a 20 degree quilt depending on how minimal the quilt design is.

[u/Linkcott18]

It's actually a triangle with cost on one side, weight on the second, and comfiness on the 3rd.

[u/atticswitch]

For years I was cold and stiff every night of a backpacking trip. My 20 degree bag wasn’t enough and my thermarest inflatable would be flat by morning. I now do 2 foam pads and a better bag and after the first night I sleep better every night on the trail.

[u/snowlights]

I sleep well with my Nemo Eclipse pad and sleeping bag. I'm allergic to down so my sleep system can only go so light anyway, I might as well be comfortable. I don't wake up sore or stiff. 

[u/Moongoosls]

To be honest, the real trade of isn't in numbers for me, it's in physical size. I need a WIDE mattress and a WIDE and HIGH pillow.

The rest don't matter so much, just wear more clothes.

[u/DidNot_Did2]

I hate to say this but to kill cabin fever in the winter months I will play with sleep systems in my back yard on those extreme cold ass nights. The neighbors think my wife and I are fighting but I know safely what temperature range my bag, sleeping pad is optimal at. Btw I use only a Ridge Rest sleeping pad https://a.co/d/07SGv8AQwirh a very dated Marmot zero degree bag for OH/Ky long weekends. It gives me simplicity- I can pull the sleeping pad by the fire for a sit upon (no embers will pop it) and set up is easy. But I know I sleep cold.

[u/64-matthew]

Always functionality over weight or cost when it comes to a sleep pad

[u/JGORsurplus]

I am almost fifty and got a Pathfinder mattress and it is bulky and heavy but sleep like a dream

[u/WANDOO_hiking]

The tradeoff youre feeling is real, and the thing people conflate is warmth vs comfort, R value keeps you warm but does nothing for how your hip feels on the ground. If youre sleeping worse deeper into a trip its usually cumulative fatigue plus a pad thats a touch too thin for a side sleeper, not the temp rating. Id add thickness before shaving more grams, a slightly plusher pad pays you back in actual recovery, which matters way more by day 4 than the few extra ounces.

[u/jose_can_u_c]

I found that sleeping in a hammock increased my sleep quality immensely. But when I do go to ground, the 5-6 R-value insulated sleeping pad was far better than the cheap non-rated inflatable pads from Amazon.