Customer Reviews Smartwool Classic Thermal Merino Base Layer Bottom

Love these for skiing, snow shoveling, or hanging out on cold days. Fit and comfort has not changed. Snowflake pattern is cute.

I bought these to go to Nepal later this year. Haven't worn them in extreme climate yet, but here at home, they fit great, are snug but not tight, not itchy and comfortably warm.

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

These are my go-to base layers for both touring and resort days. They're warm, with a good fit and they're not itchy. No complaints!

Extremely comfy and well made. Wear them under clothes or with a long top. So nice.

These thermals are durable, comfortable, and most importantly keep me warm. The fit is good and they aren't itchy. Definitely a winter staple!

My go to for base layer cool weather long underwear. Love the fit and love the colors. Waist is not too constrictive and the fabric is soft and durable. I'm a size 10-12 and the large fits great with enough stretch to be active. Bicycle Happiness!!

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.

I use these for sleeping while camping in cold weather. Also use for a base layer for hiking in cold weather. They keep me nice and warm.

In love with these pants/ layers! Best layering piece for any and all ice fishing in Montana!!

These will keep my legs warm as a comfortable and fashionable layer, paired with my new Smartwool Smartloft skirt. They fit perfectly!

I bought these for the waistband. I wanted something that felt like yoga pants instead of the restrictive elastic bands I have had previously. I found it really comfortable when I tried it on, but haven't tested it in the field yet, but I think it'll feel great under my ski bibs, or insulated skirt while hiking.

I love the pattern and the thickness. Can't wait for colder weather!

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

I sized up to a large and I'm happy I did. The fit is nice, they are warm, and could be cute leggings too by themselves since they are black. I'm using them for a base layer for skiing in the Alps. Expensive purchase but I'm hoping they last a long time.

Great fit and love the wild pattern.

I love how comfortable, warm and durable these leggings are! This is my third pair, wear them nearly everyday in winter. Highly recommend them!

Super warm and comfortable.

Have not worn as of yet too hot here can't wait to use

Feels soft and comfy when tried on. Have not worn yet too hot here yet in TN. Plan on as everyday layer as I am usually cold. True to size. Would probably rate higher but don't yet know how holds up to wear and washing.

These are so warm and comfortable

Super soft! Wear them as a layer, or as fun leggings!

Got these for an upcoming trip to Iceland. Comfortable and flattering fit.

These leggings were true to size and great quality. Can't wait to hit the slopes with them as base layer!

Headed to Alaska. Love the feel and weight. Thinking I'll stay warm!