Here's what other sites are saying:
Don't even think about heading up the Eiger, Matterhorn, or Grandes Jorasses without wearing the Millet Men's Trilogy GTX Pro Jacket. This lightweight jacket utilizes a Gore-Tex Pro shell for guaranteed waterproof protection against any condition you might come across up there, and it also remains crazy breathable to keep you as comfortable as possible while you trudge your way to the top. An Alpine fit accommodates a harness without bulking up your outfit, and Flex Comfort construction includes pivot sleeves for unrestricted mobility and precise execution with every move. The Trilogy GTX Pro also features large zippered vents to let out a significant amount of steam during the toughest sections of your climb, and the zippers are water-resistant. The zippers at the large hand pockets are also water-resistant, and you can access the pockets with your pack and harness still on. The hood slides over your helmet with ease, and the protective visor prevents the hood from blocking your vision while you belay your buddy.
- Backcountry.com refers to the men's version