Review Date: August 2015
Gear Institute reviewed the Peak Shell Jacket along with several other jackets for dealing with rain while running.
"The Montbell Peak Shell is one of the few ultralight waterproof shells we tested that features a 3-layer construction (versus a 2.5). The Peak Shell is one of the stoutest stalwarts against foul weather. Oversize, full pit zips contribute to its excellent breathability. The tradeoff is a jacket that feels a bit bulkier than other, more run-specific shells we tested."
from Gear Institute.com