Customer Reviews Smartwool Classic Thermal Merino Base Layer Bottom

I wear these in the winter as a base layer when I am outside hiking, walking or in and out. I really like this product.

these are so much softer than I expected. I love that they offer free returns because I wasn't sure of my size.

I love the durability and warmth of Smartwool and will keep buying this base layer bottom even though I wish the legs were longer for us tall humans, and that that the waistband were taller, more like lay-flat yoga pants that have a 5 to 6 inch tall waistband. This would make it possible for the back of the waist to sit in a more comfortable position, without it dipping down to let in a cold breeze! That said, I have tried others, but Smarwool base layer bottoms are STILL the best quality for warmth and durability. They last and last and last. Plus they are warm no matter what the temp! I even wear them to bed on cold nights. I wear a medium in almost every other legging or yoga pant, but Smartwool has always seemed to run small. I wear a large for this base layer bottom.

I wore these repeatedly on a 5 day trip to Banff National Park in December. They were warm, comfy and cozy. I did not take sweatpants to keep my luggage less bulky, so I ended up wearing them both under my snow pants, and also in the room instead of sweats. They are super soft and comfy!

My wife and I love smart wool socks. The past two Christmas seasons, I have ventured into Smartwool active wear, like these under layers for the cold winter months. Like their summer wear, they do not disappoint

So warm!

Beautiful pattern! Looking forward to staying warm in these pants this winter!

When it's cold, these really make the difference!

I wear these for hiking, cross country & downhill skiing. The best! Not my first pair and they won't be my last. Love how soft Smartwool woolies are- can't beat Smartwool!

I've used this as a base lawyer for skiing, running and biking! Live it so much!

This is the third one I got. Very comfortable, soft and warm. not itchy at all.

Paired with the patterned base layer top, I'm wearing it lounging around after the Thanksgiving holiday. Best at home casual outfit of the season!

Not only are these warm, but they are so comfortable. I hate the ones that have a tight elastic waistband. These are just perfect around the stomach and you forget you're even wearing them. So soft, not bulky, perfect even under tight jeans. Love love love!!

I absolutely love this thermal set! It's incredibly soft, warm, and comfortable. It feels light on the skin but keeps you perfectly cozy even on the coldest days. The quality is excellent, the fit is flattering, and it doesn't feel bulky under clothes. Highly recommend!

I work and sleep outside 5 days a week year round. I bought this a few weeks ago as an under layer and it's been great. Keeps me warm in cold weather and as the day warms up is breathable and not too sweaty. I originally bought a large since I was right between the med/large sizing. They were a little baggy so I returned them and bought medium, which are a little short but still work fine. I'm 5'9". The customer service was satisfactory and the return process was simple.

I wear smart wool tights and socks all winter and I'm almost never cold.

I use it under my jeans when I go walking it's so soft comfortable and works way better than leggings. I had an abdominal operation so I had to get the large to fit that area. It's not the first pair I've bought I would buy them again.

I love this base layer for sleeping in, as well as for under pants/skirts in the winter. High quality fabric and construction.

I use these base layers for hiking and snow sports!! They also make a very cute, warm pair of stockings for everyday wear, especially when I pair them with my Smartwool skirt!! I got the size small because size XS that I usually wear was unavailable, but they still fit nicely! Highly recommend!

These merino bottoms are lovely! They feel great against my skin and are a perfect medium weight.

I bought two pair of these wool bottoms and also tops because I am almost always cold. The weight of the knit seems just right to take off the chill indoors in cold weather, and is sufficient for outdoors activity as well. Have not yet tried them in really cold weather. Fits well under clothing. Fun colors. Easy care.

This is my third pair of smartwool leggings. Love how warm and durable they are. I wear them to bed in the cold months and layer them under dresses and skirts, too. They last a long time and hold up well. Tried another brand last time and was disappointed in how quickly they developed holes.

Fits very well. very flattering. warm very soft. Not itchy like other brands. I enjoy wearing it with the thermal base layer top.

Planning to use for a trip to Antarctica in January Have worn other Smartwool products with great comfort and warmth

These are soft and a great fit and design.. large fits like a true large. I own several pair and these are my favorite "long underwear" base layer ever! Soft and warm and wonderful. Every woman needs at least one pair of these with a matching crew top of course!