Funnybeingmewrote a review of Patagonia Capilene 1 Silkweight T-Shirt - Short-Sleeve - Men's on September 2, 2015
Familiarity: I've used it several times
Fit: True to size
The feel and quality of these shirts are really good and the spandex material is good when working out. I'm have an athletic build and the size fits perfect except the sleeves. I would say they are about 1.5 inches too long compared to Marmot Windridge and Mountain Hardwear Wicked Lite. I often have to pull the sleeves up at the gym.
Also I'm not sure if Backcountry has yet to update the description but currently Patagonia is using Polygiene permanent odor control. The description on this has the older version's Gladiodor.