Material: 210D 6.6 Mini Ripstop / HydroShield AirZone LT x99 lightweight, breathable, floating mesh carrying system Front pocket for quick access Compatible with hydration systems suitable for 3L hydration bladder Key clip. The Airzone Active 22 Day Pack from Lowe Alpine is perfect for your daily commute, hiking up a mountain or trip away. With the air zone mesh back panel, the bag is well ventilated on your back to keep air flowing. This backpack has weatherproof coating and ripstop fabric to tackle all weather types. The backpack has a walking pole attachment and sternum strap with whistle. With two side stretch pockets, you can keep your water and essentials for easy reach. With an integrated rain cover, you are good to go anywhere.