Smartwool  Classic Thermal Merino Quarter-Zip Base Layer Top - Men's

This is a great base layer that I’ve worn regularly for the past four months—both at work and while walking my dog. It’s been very comfortable and fits well. Unfortunately, a hole has already developed at the left elbow, which is disappointing given the short amount of time I’ve owned it.

Very soft, nice quality, and looks great. Often Merino Wool shirts and sweaters run a bit small, but not Smartwool. The sleeves are long and extend below my wrist, which is tough to find for me. The overall fit is on point, maybe even 1/2 size larger than expected. Other brands don’t fit me properly and are a fairly tight. The generous cut works!

This base layer made my winter runs much more comfortable. Combined with a light windbreaker, it keeps me warm at below-freezing temperatures. It is also great on its own in warmer weather, but what really surprised me is how well it works at high temperatures. I wore it while hiking a completely exposed trail on a clear sunny day with temperatures in the 80s. I did this because I didn't plan the trip well and expected to be punished for it. However, this base layer worked wonderfully. It is extremely breathable, which kept me dry throughout the hike. Plus it provided a great protection from sun. I had no idea that wool can be so versatile.

I own like six or seven of these and wear them all the time whether it's for work, hiking or other outdoor pursuits because they're very comfortable, warm and wash up well. You just have to hang them upside down with clips rather than putting on a regular hanger because then the shoulders get sort of nappy. My very first one of these like 15 years ago doesn't have that issue but once you figure it out, it's not the end of the world.

Love these base layers. Recommended to several friends who are now loving them as well! I'm 6'7"" tall and the body and sleeve length are perfect! I chose xxl as I like the feel of a little oversize gives me. They wash really well, don't smell, seem to adjust well to temperature variations through the day and evening. The colors are rich. The zippers work really smoothly. The quality of the wool and the sewing is as good as it gets! Since acquiring my first one, and having worn their socks for years, I now wear their boxer briefs which are also excellent. Thank you Smartwool for doing it the right way. A bit costly but so worth it!

I wanted a warmer undershirt than my Patagonia R1 for colder days on the ski slopes. This one fits the bill. It's snug enough to be my first layer but still just loose enough to be a second layer that goes over a thin polypro undershirt. It is thin and stretchy enough to go between the polypro and the R1if I need that much insulation. The sleeves go just beyond my wrists and the hem sits even with the bottom of my bum. As expected with other Smartwool products the merino wool is not scratchy or uncomfortable.

I got this for my husband as part of his birthday gift. I knew he wanted a new layer for longer hikes or backpacking. He likes it so much that he has been wearing it on repeat at the house, for small errands, even to dinner lol... he really enjoys it so I think he may need a second to keep in his pack. The fit worked out great for him. He has long arms and this actually reached where he likes. Most of the time its a tad short. He also seems to enjoy the feel. He didn't believe it was wool because usually it makes him itchy. He said this has been the best gift in a loooong time.

After a nearly 30 year break from downhill skiing I am back at it. I am starting to build up clothing that works well for me. Both during the day, and Apres ski. I love merino. I know how it keep warm, it moisture wicking. Regulates both temperature and smell. What I wanted was more fashion. I saw this and I'm very pleased. Its a great copper color for me. Like expected, it was easy to order. The product description and photos were quite clear. I'm 5'11" about 195lb. this is me in a Large

This fit perfectly and is a great base layer for cooler temperatures. The grey-blue color goes well with many other colors. The shirt does not wrinkle and the fabric laid very smoothly around the zipper. It looks sharp even worn as a stand-alone shirt.

A bit scratchy but warm. Did not shrink after a wash and going through the dryer. A bit smaller than expected but I think it’s supposed to fit tighter