Lowe alpine airzone trek plus 3545 backpack black youve cleared your schedule and the weathers on your side so youre keen to head off on an epic day hike or a minimalistic overnight adventure first though grab the lightweight trek airzone backpack to ensure all that you need to carry you can in comfort and with speed lightweight trekking means you can crank up the pace and lets face it that can mean a sweaty back not so with the improved adjustable airzone centro back system deli