Perfect all-around commuter or trail pack that expands on demand for greater flexibility. With one zip of the expansion panel, your overall cargo volume expands over 40%. & whatever you’re carrying, the air-mesh harness, hip belt & adjustable sternum strap keep your load well-balanced & comfortable. Fleece-lined media pocket protects your smartphone, iPod, camera or other devices while keeping them close at h&. Reflective back strip with tab to click on a blinker for early morning & evening safety. 2L Antidote™ reservoir keeps you well hydrated.