Customer Reviews Smartwool Merino 250 Base Layer 1/4 Zip

Nice fitting & very warm, doesn't hold stench

These are great for light cold weather by themselves or under a thicker jacket for colder weathers. It's light but can keep you warm and comfortable. They are also great for starting a hike with a tshirt underneath where you can switch to just tshirt if it gets hot.

It runs a tad tight, but it is perfect for a baselayer. I have been using these baselayers for years: comfortable and warm. The perfect combination.

It was a little bit itchy when I first put it on, but I got used to it very quickly. It's just the right balance of warmth and breathability for a cooler hike.

The best! I love this shirt. Great for any season.

I work in the flower industry so Always cool temps! This base layer keeps me perfectly comfortable, it's light and looks sharp.

Just a great base layer piece. I use this in Fall/Winter golf and as a daily wear base under a sweat shirt all winter & early spring.

I am a 5' 8" 150 lb broad shouldered woman who wears a 36A. The men's small fits great. Fitted enough to be cute. Love the blue/grey/ pewter color!

Great. Have a different color.

Soft. Comfortable. Looks good

I walk my dog 2.5 miles a day and never miss a day due to the cold PA winters. I despise wearing several layers of clothing to stay warm. You don't need to do that with this quarter zip top. It's like wiring a heater! I wear this and a mid weight winter coat and that's all I need. This is the second quarter zip base layer top I've purchased from Smart Wool and they are both amazing. Great product.

My husband loves these. They have become his favorite layer from fall to spring.

As a medium weight Smartwool, the thermo base layer is perfect over a tee shirt and under a parka on cold days Form fitting makes it great for golf with a wind shirt over it for temps down to freezing And neutral color goes with just about anything

Great product. Heavy fabric. Perfect for winter as an undergarment. Perfect for spring as an outer shirt. Very high quality. Love it.

This adds versatility in maintaining body temperature. The zipper is sewn so you don't feel it when it's up, not scratchy like lower quality products. It is a functional, practical piece of gear which functions to give the user more time to decide whether to stop and shed a layer. The wool is comfy. It wicks moisture. In cold weather wear it over a crew neck base layer for a great look and excellent performance.

Can't say enough about Smartwool products. I tend to use them for days without having access to a washer and they never smell- and a wash later and good to go. Dries fast and feels great even when sweating in the cold. The best product period (in my mind).

Work outside. Keeps me warm and happy.

Second one.

This base layer is the bomb. Highly functional, controls odor, breathes wonderfully. I'm able to go many wears before having to launder. I've been using it as my favorite "dress up" shirt as well the past month (while it still looks new!) and plan on purchasing another for that dedicated role. Good lookin' shirt.

Great base layer! Very warm and doesn't restrict movement! Highly recommend for anyone outside for hours during winter. Use them during winter days for delivering packages.

Perfect fit, snug enough, and warm. Fit was perfect.

The merino wool provides terrific insulation from the cold weather. It is a very comfortable base layer.

The zipper is actually a great addition. As the day warmed up, I could control my body temperature very well. Very comfortable too. I wear it beyond just skiing too. Versatile.

Fantastic Base Layer! Keeps me very warm during long, cold days outside.

I wear these as a base layer when hiking and skiing. The product performed great in a recent ski day where outside temperatures were in the single digits at the base a below zero at the summit.