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What temp for long underwear

Steve Williams · · The state of confusion · Joined Jul 2005 · Points: 235

When you're cold.  Duh.

Alex Fletcher · · Las Vegas · Joined May 2016 · Points: 252

My legs overheat while moving if I wear long underwear. I usually just vary the thickness of my pants. Example: I have “climbing pants” and I have thicker “alpine pants.”

I only wear a base layer pant when wearing my ski pant, a non insulated hardshell.

I then make up the difference for cold legs while not moving with an abundance of jackets.

Only ever in the most of extreme scenarios have I ever put on a second pants and it’s usually a hardshell outer layer to block wind or rain/snow. Typically this is during stormy days near the summit of Mt Baker.

I’ve carried around base layer pants in my pack for years and often leave them behind now. The only time I’ve ever “needed” them was in a situation where I fell in a river and they were the dry pants I could change into although we were already at the car.

The one time I did get completely drenched while approaching (rain, heavy wind, whiteout, on snow) we set up camp (on snow), and I dried out wearing my clothes inside my tent overnight. I guess if I had baselayer pants I could have been a little cozier but I was prepared.

Later that evening, a 60mph storm eviscerated my partners tent while he slid across the snow inside of it. My tent, a 4-season Hilleberg, also broke a pole and bent the other. He had to stay the rest of the night through the remainder of the storm in my collapsing tent that night while his became a wet rag stuffed into his pack. In the morning tent poles were scattered everywhere because his had exploded! We picked them up of course.

Usually don’t wear long underwear ever except skiing. 

FrankPS · · Atascadero, CA · Joined Nov 2009 · Points: 276

I invented a system called "layering." Add "layers" when you're cold. Remove layers when you start getting too warm. Try it. It's genius!

(I also invented the Internet, but I'll save that for another thread.)

Mark Pilate · · MN · Joined Jun 2013 · Points: 25

I have the opposite MO as Alex above.  I took Frank’s layering idea and ran with it (thanks Frank)  I have longjohns in about 4 weights.  From super thin and light to winter expedition weight.  

The scientifically established proper temperature to entertain wearing any type of LJ’s is exactly 37 F +/- 2 degrees

I find a combo of long underwear and then pants (maybe up to 2 pair if dead of winter cold and snow is involved) to be much more comfortable and dry feeling than any combo of plain pants in temps from 40 to -40

At temps starting to get north of 40, then they start to be superfluous regardless, but it’s amazing how large the comfort/temp range of a pair of super light longs and a very light summer weight alpine pant can be. 

Nick Goldsmith · · NEK · Joined Aug 2009 · Points: 470

Marc. maybe he is just really stoned? 

Ari Stoner · · Denver, CO · Joined Nov 2017 · Points: 10
Pete Swrote:

80s spandex solved this problem. 

seriously why did that stop we had it made

Cherokee Nunes · · Unknown Hometown · Joined May 2015 · Points: 0

seriously why did that stop we had it made

The 90s. Grunge baggy pants. Then the penji swung to skinny jeans. Just wait to the next baggy pant episode...

I'm sort of looking forward to it, myself. Chubsters wearing skinny jeans is an abomination, I don't care what the self-esteem experts say about that.

Fail Falling · · @failfalling - Oakland, Ca · Joined Jan 2007 · Points: 1,043
Christopher Smithwrote:

Seriously I'm struggling to think of a circumstance where that zipper is helpful.....

It's a weird application of the design imo. I have down overpants that have those type of zippers that are great for getting on at a belay without having to take off your harness. Just zip them on like you're getting into them sideways and viola, toasty at the belay and quick to take off when it's time to climb. But for long underwear? That doesn't really make any sense for climbing or anything where you're wearing a harness and they're underneath your pants which likely aren't zip off so the benefit is moot. 

Ryan Bowen · · Redmond OR · Joined Nov 2021 · Points: 5

You guys wear underwear?  Weird

Marc801 C · · Sandy, Utah · Joined Feb 2014 · Points: 65
Nick Goldsmithwrote:

Marc. maybe he is just really stoned? 

Yeah, I thought of that - esp with his last name - but still....

Ken Tubbs · · Eugene, OR · Joined Sep 2018 · Points: 1
Fail Fallingwrote:

It's a weird application of the design imo. I have down overpants that have those type of zippers that are great for getting on at a belay without having to take off your harness. Just zip them on like you're getting into them sideways and viola, toasty at the belay and quick to take off when it's time to climb. But for long underwear? That doesn't really make any sense for climbing or anything where you're wearing a harness and they're underneath your pants which likely aren't zip off so the benefit is moot. 

I have overpants as well but I find them too much in some situations. These work great for cold mornings where you know it's going to warm up. I used them every day at COR last September. Our campsite faced east so mornings were cold and it was nice to have warm legs while prepping for the day. I've always removed them before putting my harness on but if I had to I'd just girth hitch a double runner around my waist and drop my harness to my knees. If you need warmth while belaying overpants are the ticket. I've not even noticed the zippers even when wearing a pack.

Yeah, they are a bit of a specialty item but they work for me. As with most things YMMV.

Ackley The Improved · · Unknown Hometown · Joined Mar 2020 · Points: 0

In conditions your feet will get cold, over insulate your legs and vent your upper body.

Ken Tubbs · · Eugene, OR · Joined Sep 2018 · Points: 1
Mark Frumkinwrote:

"Removable underwear" I had no idea they made that. Now how do I get these nonremovable undies off?

LOL! I forgot I was on MP where I have to be extremely precise in my language. I work with ESOL software developers so I've developed the habit of pausing and thinking about the speakers intent before answering. I let my guard down. I'll try to do better.

Fail Falling · · @failfalling - Oakland, Ca · Joined Jan 2007 · Points: 1,043
Ken Tubbswrote:

I have overpants as well but I find them too much in some situations. These work great for cold mornings where you know it's going to warm up. I used them every day at COR last September. Our campsite faced east so mornings were cold and it was nice to have warm legs while prepping for the day. I've always removed them before putting my harness on but if I had to I'd just girth hitch a double runner around my waist and drop my harness to my knees. If you need warmth while belaying overpants are the ticket. I've not even noticed the zippers even when wearing a pack.

Yeah, they are a bit of a specialty item but they work for me. As with most things YMMV.

If you remove them before you put on your harness, what's the value in their zip off capabilities? If one isn't actually using the zipper feature, wouldn't it be more prudent to just get regular long underwear that will work exactly the same way but without the extra cost and materials?

Jason EL · · Almostsomewhere, AL · Joined Jan 2021 · Points: 0

The Mountain Project forum code should be smart enough to prohibit anyone from Alabama from posting on this matter.  But, if you are reading this post, apparently not.

It's a function of temperature, exertion, duration, solar load, et cetera.

I'd like to say if the average temperature is below 30ºF, I like to have a light thermal layer under my pants, and shell pants in a pack.  But, even at 10ºF, I've come arguably close to bursting into flames while trying to keep up with some guys; if I was just by myself, I would have given serious consideration to taking of my boots, removing my thermal midlayer, and just finishing the summit rockpile of Mt Washington in my boxers, but I wasn't, so all I could do was roll up my bottoms as high as I could, and tried to keep up.

Ken Tubbs · · Eugene, OR · Joined Sep 2018 · Points: 1
Fail Fallingwrote:

If you remove them before you put on your harness, what's the value in their zip off capabilities? If one isn't actually using the zipper feature, wouldn't it be more prudent to just get regular long underwear that will work exactly the same way but without the extra cost and materials?

You're trying to get me to make a video aren't you :)

Speed/convenience. I can have these on/off in a fraction of the time it takes to do the same with traditional long underware (unremoveable for you Mark). I don't have to find a place to sit, remove boots, sockets, pants, thermals, put on socks, pants, then boots. As I've gotten older I find my metabolism is not what it used to be. I sweat more than I used to and don't tolerate the cold like I used to so these work well for me.

Don't get me wrong; if I am confident I'm going to wear a base layer all day I'll go for my light or midweight Capilene. But that's because while the Kuiu's are a good product they are not a great product. The fabric (synthetic not merino) is not as stretchy as I would like and the cut is a little tight in the calves for me. But for those days where I know there will be big swings in either temperature or my activity level I really like the convenience. Again YMMV.

Velcro instead of zippers would be nice because I could do the Chippendale thing for OLH but then again hate to encourage her.

Old lady H · · Boise, ID · Joined Aug 2015 · Points: 1,375
Ken Tubbswrote:

You're trying to get me to make a video aren't you :)

Speed/convenience. I can have these on/off in a fraction of the time it takes to do the same with traditional long underware (unremoveable for you Mark). I don't have to find a place to sit, remove boots, sockets, pants, thermals, put on socks, pants, then boots. As I've gotten older I find my metabolism is not what it used to be. I sweat more than I used to and don't tolerate the cold like I used to so these work well for me.

Don't get me wrong; if I am confident I'm going to wear a base layer all day I'll go for my light or midweight Capilene. But that's because while the Kuiu's are a good product they are not a great product. The fabric (synthetic not merino) is not as stretchy as I would like and the cut is a little tight in the calves for me. But for those days where I know there will be big swings in either temperature or my activity level I really like the convenience. Again YMMV.

Velcro instead of zippers would be nice because I could do the Chippendale thing for OLH but then again hate to encourage her.

Lemme know if ya get those tearaway things going ahead of the next hot spring visit, and it's game on, dear. 

Best, Old (but not dead) Lady (ha!) H

Old lady H · · Boise, ID · Joined Aug 2015 · Points: 1,375
M Appelquist wrote:

@OLH Would that count as a new route or just a rout?

Could go either way. Suddenly single after 40+ years? 

Shit. 

Past the "sell by" date doesn't even remotely cover it.

I think it's safe to assume this Smilodon will merely continue the sloooow process of fossilization, and all can breathe a sigh of relief. 

H.

Guideline #1: Don't be a jerk.

General Climbing
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