Great headband!
I use this for running. It's wide, so on colder days you can cover your ears, and for warmer days it serves as a hair band. I love Smart Wool. It's light weight and breathes well. Nice product.

Great Headband
I've been wearing a heavy woolen hat during the winter to walk my pups. But now the weather is nicer, I'd like to switch to a headband so I at least have ear protection against the cold winds here in upstate New York. I bought this headband because it was wool for my ear protection and not bulky like others out there on the market. The only downside is it is a bit wide for me so I just double it up in just the front. I definitely would recommend it. For that matter, I bought two (one for backup).

Great headband
Training outdoors during the winter in Louisiana can be a tricky thing. Our conditions are never arctic-blast cold, but some days the dampness combined with moderate cold can penetrate right to the bone. I've always been a big fan of headbands when it comes to winter training in the deep south. If I keep my head and hands warm, I feel warm. This season I've been on a big merino wool kick and I stumbled across this simple Smartwool Headband. The reviews were good and the price was reasonable. After wearing this headband for a few weeks, I can confidently give it a double-thumbs up. It provides lots of "noggin' coverage" and it doesn't fit too tight like some other headbands. I hardly notice I'm wearing it and it does a good job keeping me warm. I'm thinking this is a great headband for temps ranging from the mid-20s to mid-40s. I know it's just a headband, but we runners get excited about the littlest things.

Does the Job Effectively
Ordered 2 of these headbands for winter running and they keep my ears toasty warm. Would highly recommend for any outdoor winter activity!

Love it! Wish it came in multiple colors
Really, this is the cat's meow! It is whisper light, but keeps me incredibly warm. It's nice and wide - wider than most headbands and it doesn't flatten my hair like many would. It has a nice light fit, which helps avoid the hair issue, it's thin enough to even wear underneath something else for those really cold days, but this is usually enough, even in Minnesota. I only wish it came in more colors! Love the fit (and I've got a big head for a woman...)