William N.wrote a review of Peak Performance Heli Midweight Top - Men's on February 4, 2013
Familiarity: I've put it through the wringer
Yes, its expensive - but, it's worth it. I use this top as a baselayer on days when it is 15 or below. I have used it along with a spyder leader jacket and been completely comfortable in the single digits. Pair it with a mid-layer for extreme warmth.