Built for day hikes or urban commutes, the Trail Zip 18L is designed for traveling light. With 18 liters accessible by zippered access, the Trail Zip 18L also features dedicated Z-pole sleeves to stash trekking poles, and our signature BDFlash pocket specifically designed for headlamp storage, keeping you safe and visible . An internal stash pocket stores your wallet and keys, while four connection loops along the back allow you to secure the Trail Zip18L to another larger pack so you can have a quick-detachable summit pack while out on bigger adventures.Features Zippered-access main opening Two dedicated Z-Pole sleeves keep trekking poles secure while hiking and commuting Four connection loops along back panel for attaching to larger packs when on longer missions BDFlash pocket—an integrated headlamp sleeve to keep you safe and visible Internal security pocket for wallet and key storage Lightweight shoulder straps with fully adjustable sternum strap for security and100D mini-rip translucent body material for lightweight comfort and durability Specs Average Stock Weight: 415 g (14.63 oz) Materials: 100d Nylon 4mm Ripstop Volume: 18 L (1,098 cu in)