Mr Bigglesworth wrote a review of SmartWool Reversible Training Beanie on June 9, 2013
Familiarity: I've used it once or twice and have initial impressions
This is a really nice cap. The wool is very soft and even after wearing it all day it won't itch. It's also thin enough that you can wear it under a helmet. But caveat emptor with the one they call "Arctic Blue". The color is nothing like the one shown here, it's actually a totally sucky teal color. If you like hiddeous colors you might like it but others probably won't. When it arrived, I was horrified to see the color and would have immediately called shenanigans but I live in Argentine Patagonia and shipping it back would have cost me more than the original purchase. Now I'm stuck with this comfortable but ugly hat.
Sad. Super sad.