When your day is going to consist of as much up as down, you need something special to keep you warm and comfortable for the long haul. Conveniently, that special something comes in a very attractive package in the Patagonia Men’s Nano-Air Insulated Hooded Jacket.
http://www.backcountry.com/patagonia-nano-air-insulated-jacket-mens?cmp_id=VD_PAT00EP