New for 2010, the lightweight Spectro AC 24 Day Pack by Deuter is a high-performance carrier for the light and fast, ounce-counting day hikers. Offering Deuter's world-famous active ventilation in a lightweight package, this pack incorporates the new Aircomfort Flexlite back system that gives the user 25% less perspiration with a flexible, lightweight spring-steel construction that mirrors the movement of your body. Effectively transferring weight to the padded, contoured hipbelt, the Spectro AC 24 stands away from your back as the Aircomfort FlexLite System promotes airflow and helps to keep you cool and collected during active pursuits. Convenient performance features include a large stretch-woven front stuff-it pocket, front-entry two-way zip panel for easy access to gear, ice axe and trekking pole attachments, and stretch-woven side pockets. This Deuter backpack is also hydration compatible.