3L CRUX reservoir for faster flow rate powers longer adventures. Back panel includes innovative air tunnels to maximize ventilation while keeping load close to body. Dual wing belt integrated cargo compression. Stretch overflow pocket. Easily attach and remove trekking poles when needed. Soft-lined pocket for sunglasses or electronics. Side-stretch pockets for extra storage when you need it. Adjustable sternum strap ensures comfortable fit for a wide variety of chest sizes. Load bearing hip belt.