Customer Reviews Smartwool Merino 250 Base Layer Crew

I gave this base layer a good trial today. Walked approx. 5-6 miles in 30- 40 degree F weather. I had a Smartwool medium weight sweater on top of this base layer, and a light jacket over the two. As you can see by the pictures, the base layer collected and held quite a bit of perspiration. I was not running, only briskly walking on the trail which is for the most part flat. I like the fit and feel of this, but am a little disappointed by the dampness that it retained. Had I stopped for any length of time, perhaps a chill would have set in. It really would not be a good choice for vigorous workout, only an activity that is more sedentary. It is a nice underlayer for casual wear.

#sweepstakes. This base layer is a great color and perfect fit.

I bought this crew 250 base layer to primarily wear on a March snowboarding trip to Vail, but also to serve on early summer hiking trips, as well as to wear around the house on cold days. The base layer worked well across a wide range of temps while I was at Vail. On +5F cold temps paired with a mid layer zip up and snowboarding jacket and +55F warm temps paired with a light softshell, this base layer performed spectacularly. Breathed well, managed sweat well on heavy output runs, and left a 5 day trip (worn every day) completely stink free. Another big plus is that it looks acceptable enough on surprise video calls (you know, when your boss randomly says "Hey can you chat real quick?" and you have to follow-suit and turn on your camera?...) during WFH. Can't wait to put it through it's paces further on the trail and mountains this spring and fall. The only slight complaint that I have it is just slightly oversized in the sleeves and general fit (for a base layer). Not too big of a deal, but the wool fabric gets stretched out a little bit after the first wear too, however I have read that it bounces back after the rare wash.

Best product on market

Great base layer shirt for skiing. I have multiple. Love the new 90's retro design

This is the third time I've bought this particular top. It's the perfect weight to help me stay warm enough without overheating. And it's soft, washes well. I even wore it under a sun shirt when I was snorkeling to help me stay warm. It worked great.

Great shirt! Cozy and warm base layer. Only issue is the elbows are prone to wearing out.

I'm afraid of cold weather but this product works really well in MA, so I purchased it again

I'll be using mine for skiing and chilly days on the motorcycle.

I use this as a base layer for work on colder days and for running during the winter. Extremely comfortable. I own this in 3 colors now

Use this as warm base layer for woodworking in poorly heated spaces. Reliable and comfortable - easy to keep clean. Product highly recommended!

I wore other brands reflective base layer and had to layer couple on top of it to feel warm when I'm snowboarding , but with smart wool on god I only wore it with a snowboard jacket and it kept me warm all day

I am always comfortable in this sweater never too hot or cold

Can wear this all day on the the slopes, go straight to aprs, and then wear it back at the house until bedtime... In fact, I kinda hate taking it off at the end of the day. Just the right level of warmth.

I bought this as a layering system for cycling and to try and minimize winter bulk. This base layer keeps me warm without overheating my body. Want to get one for around the house.

My son and husband love this top. It will provide warmth under clothing during the winter but can also be worn by itself. They love the outdoorsy/trees pattern!

Everyday use in cold Michigan weather

Product is thick, soft and warm.

This Smartwool sweater is an everyday piece of my wardrobe. Fits perfect, luxurious fabric, washes well without shrinkage.

Highly recommended base layer. Warm, but doesn't overheat you. Took for a jog at 27 degrees with only a light jacket on top and was never the least bit cold. Very comfortable and soft, also dried my post-jog sweat quite quickly. I'm 6'2" 220-225 and can bounce between L and XL, depending on how the brand fits. Purchased both, but think the large will be the better fit for me. First try on L was tight and XL fit great, but they do naturally stretch a bit as you wear over just 20-30 min. Will say the mineral blue heather does not look like pics 1, 2, or 4 at all. Pic 3 hits the actual color pretty close. I'll likely purchase more.

This gas been a cold winter and I'm getting older. This is great for an underlayer for all outdoor activities. Merino wool is the best

I love the pattern, the thickness and the softness of this top. It's great for layering to ski. Not too much nor too little.

I have bought multiple times, love the fit and how flexible the wool is to fluctuating body temps

This base layer can be worn by itself, or layered with a shirt. It's comfortable and warm; nearly perfect!

I use the product as a base layer for snowmobiling. I have used the bottoms for about 3 years now and decided to get the matching top. The product keeps me warm dry and comfortable.