Merino wicks and prevents the funk growth, while the strategic mesh placement and quarter-zip allows ventilation when you need it. In warm weather chest zip down and sleeves pushed up. In cooler weather you can chest zip down when backpacking a heavy load, then zip back up (and add a layer if necessary) when stopped, spotting, etc. In cool weather it's the best way to keep from overheating (and sweating) when you're burning calories. Running around the desert or as a base layer on a cool mountain top morning, I love it.

Wore this new shirt over the weekend on a camping trip. Had no problems with it until we after we got home and unloaded. I noticed that I had a rash on my arms and on my sides. I am not sure if I am allergic to the wool or what. We were not in poison oak or anything like that. I did not wash the shirt before I used it, that might be my problem. Once the rash clears up, I will try this shirt again (washed this time).
The fit was great ( a little long in the arms) and very comfortable and warm. The zipper was nice to be able to zip down to cool off when needed.

I've used the shirt on one 4 mile hike thus far. It was hovering around 32-34F, and drizzling/foggy with not much breeze and probably an average of 10&quote; of snow to walk through. The Good: The shirt has a lot of stretch, and does feel very soft and comfortable on the skin. It is also extremely light weight. It's so light you can practically see through it. Now The Bad: I naturally sweat a fair amount, which is why I've loved merino garments. With that being said, I felt like this shirt did not breathe as well as my smart wool 250g that is 100% merino. I also felt like it didn't dry as fast as the 100% wool either, which then led to feeling cold on breaks. I felt warm for most of the hike, even with the zipper all the way down. I will say that even when the shirt felt wet and warm that it never felt clammy or sticky like some synthetic base layers tend to do. I'm hoping that this was all because of how high the humidity was. I'll have to update at a later date when I have more experience. Now the worse... After my hike the shirt smelled horrible. I was really not expecting that since it takes some serious wear and sweat for my smart wool piece to ever smell that bad. I would typically be able to return from a hike and continue wearing my merino base layers around the house due to their comfort and lack of smell. There was definitely no continuing to wear the FL shirt. Obviously in general this piece has great reviews, but I'm really questioning if the aero-wool blend is as good as 100% blend or not if I couldn't even stay cool at 34F. Hopefully my experience gets better with this shirt because I love the feel and stretch of it.

This is a great warm weather piece. It fits to size, i usually wear a L in T shirts and the L in the Wick is perfect. Used it during archery season in California and performed flawlessly. Planning on using it in South Africa for the season and it should be perfect for the warmer African weather. The Cipher camo is perfect for the African bush, everyone that has seen it in SOuth Africa has commented on the versatility of the pattern. The Wick seems to be sturdier than the previous iterations of FirstLite lightweight base layers and i'm expecting to get great service out of this piece

This shirt is easily my most used, favorite FL piece. It wicks sweat very well, and if you hunt in hot conditions like I do in Georgia, the zip is a must. I bike into my spots and its great to just zip the shirt wide open to let the air in. I can normally get 3-4 sits in before I have to wash it, as it repels odor great from its merino fabric. Not much else to tell, the Large fits me perfectly.