My initial view on this long sleeve shirt is the sizing is off at least for me I'm 6ft 245 it's long in the sleeves and short in chest lengthfor me. I was able to use it in the field on a 32 degree night sleeping in a hammock with under quilt and 35 degree sleeping bag. It tested surprisingly well considering what I was against. The feel of the shirt on my skin is good. I'm not one that likes wool products because they itch but this is not a problem at all. It reminds me of an athletic shirt that will keep you warm and dry. Even though I love the color there was only one color to go with. Over all great quality product it's just a little short.