Arc'teryx Aerios 30L women's backpack in light grey Used, like new condition: I only used it 3 or 4 times, and just didn't ended up using it as much as my other packs. Features: The high-tenacity, 100-denier CORDURA® nylon fabric with liquid crystal polymer ripstop grid stands up to heavy use on the trail Highly breathable AeroForm back panel enhances carrying comfort; anti-barreling framesheet prevents a the full pack from bulging and pressing on your spine Breathable shoulder harness includes 2 zippered pockets to accommodate your own soft flasks (not included) Padded hipbelt, adjustable harness and adjustable sternum strap provide a comfortable carry and women-specific fit Multiple external pockets are easily accessible: 1 front pocket for quick-access items, 2 stretch-mesh pockets and 2 side-access zippered pockets Internal security pocket with key clip helps you stay organized Webbing daisy chain and bungee cord compression system allow you to attach extra gear to the outside of your pack A clip keeps your own hydration reservoir secure inside the main compartment (reservoir not included) 2 trekking-pole attachment points