Patagonia Stretch Ascent Jacket: The Patagonia Stretch Ascent Jacket is Patagonia’s most versatile alpine climbing hard shell. It has a lightweight dynamic stretch and 2.5-layer storm proof protection. This shell is named for the hardest climbing routes around and the whole jacket weights less than 11oz. Design and construction work together to shave weight and reduce bulk: The pockets merge into pit zips for ventilation and the seams are welded with thin, flexible seam tape. The helmet compatible hood has a laminated visor and the simple single pull adjustment makes this shell the obvious choice for those discriminating users who expect the most out of an alpine-style jacket.