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For big travel days or shorter day hikes, we turn to the Mountainsmith Zerk 25L Backpack for full-featured, organized storage. Built from burly EXTREEMA recycled nylon ripstop, this backpack hangs tough on rough trails and busy commutes with some eco-friendly peace of mind, while the customizable features keep things fast, light, and versatile. The large main compartment has plenty of room to carry our layers, lunch, camera, and drinks, while dual ice axe loops and gear loops add storage and free up our hands. The removable waistbelt and adjustable sternum strap provide carry options, and dual side compression straps cinch down a stable load when the trail gets steep.