Nicholas Tuck wrote a review of Craft COOL Mesh Sleeveless Base Layer - 2012 on February 10, 2013
Familiarity: I've used it several times
I looked for a reasonably priced base layer for a while and this one is an awesome base layer without getting ripped off.
I have used it <10 degrees and in the 60s and like everyone has said about base layers, keeps you warm and cool when needed. Great stuff, don't hesitate to buy!