Customer Reviews Smartwool Classic Thermal Merino Base Layer Bottom

Flattering design and fits true to size

I needed a very warm base layer for an upcoming trip and since I've been pleased with Smartwool socks, I decided to try the merino base layers even though I'm exceedingly sensitive to wool. I recently wore these bottoms (and the top) underneath fleece pants while exercising outdoors on a single-digit temperature day to test them out. They were very comfortable (not at all restricting), didn't cause itching and kept me warm. I typically wear size 2 pants and the XS fit well. They're snug but I want a close fit since I'm wearing them underneath other pants. Having said that, they're very attractive and not too tight, so I can wear them alone if I choose. Very satisfied!

Great product for the price. Wearing mine now and its cold out. They are so comfy I do not know they are on. Perfect layer for winter . I plan on buying a second pair in the future. Honestly I could live in wool. I have several pair of Smartwool socks and some long sleeve tops. They are all my "go to" garments.

Use as an undergarment for running in the cold weather. Absolutely love the warmth it provides

Great base layer to put under jeans or sweats. A little itchy, but worth some discomfort for the warmth!

I started wearing to the gym but now wear them almost any time.

These were too big for me! Admittedly I was in between sizes and bought the size up. The waist band was fine and I appreciate that it is on the wider side but there was a lot of room in the hip area. I have big thighs so it fit better there and there was just a ton of room in the crotch which made it look weird at least on me. But I like the fabric and bought in a different size hoping they lay better! Final note- I wish there wasn't a very-unflattering seam right down the crotch but I know this is a problem with nearly all tights, not just these!

This medium is a lot larger than last year's medium and the fabric is a lot heavier. Still works though.

Fit is very good, was looking for a companion lower set to go with my 1/4 zip top. Construction is top quality and can be layered for additional warmth.

Bought for wife. She loves them. Being cold is a thing of the past.

There are vey soft and fit well, however the waist is a little bit more low-cut than some other smartools I have tried. very comfortable. I am 5'4 123 lbs. I ordered a small

There are vey soft and fit well, however the waist is a little bit more low-cut than some other smartools I have tried. very comfortable. I am 5'4 123 lbs. I ordered a small

Soft

Great baselayer. Would love if they could be multi-use tho as standalone leggings. Bit see thru and tend to droop down so pulling them up a lot.

Used during long distance backpacking trip. Good quality as base layer and sleep

Soft, comfortable fabric. I wish they were a little longer, they don't cover my ankles and I'm definitely not a "tall" size (I'm 5'5")

Great base layer and pairs nicely with the thermal 1/4 zip top. I am on the short side and the legs are long for me. It would be great is Smartwool would make a petite size!

I love Smartwool, but these particular pants are a little weird. I'm 5'7" 138 lbs. The length is perfect. The waist fits great, but the cut is NOT even on both sides. The first pair of pants I received was defective, and Smartwood promptly replaced them. I was very satisfied by the customer service!! The 2nd pair I received was still a little off, where one side of the pants were cut smaller than the other side. It has something to do with the machines that cut the pattern in the warehouse and it's noticeable to me. I didn't send them back yet, and might just deal with it, as Smartwool was so kind to fix it the first time. #sweepstakes

Ordered in 2 sizes. Kept 1, returned 1. The size small fits well, and is comfortable.

I purchased these for an upcoming extreme weather expedition. I love them so much that I wear them around the house. Very comfortable and true to size.

The item usually wears out after a year of use. Also, I'm disappointed that I didn't purchas the item when it went on sale on Black Friday

Great for winter outdoors. #sweepstakes

Great for winter outdoors. #sweepstakes

These pants are breathable and warm and not scratchy. Definitely high quality. The only issue I had is they weren't tight enough around my waist so they got slightly baggy. It's not a big problem though because it's an under layer. #sweepstakes

These are kind of like wearing Smartwool socks on my legs, I love them and will use them often when the weather cools down for daily dog walks and more.