The new AC Lite 21 SL is a women-specific version (SL), the ideal companion for day hikes. Our popular hiking pack is now even lighter and features our Aircomfort back system for maximum ventilation. A large zipper opening down the full length of the front provides an excellent overview of contents. A cell phone, snacks etc. are easy to access in the stretch mesh side pockets. And a helmet holder can be attached using dedicated docking loops on the front.