• Stretch overflow storage compartment lets you easily stash a rain shell or extra layer
• Safety whistle built into sternum strap
• Reservoir does not Include the Quick link system
• The brand new Crux delivers 20% more water per sip, with an ergonomic handle for easier refilling, and an on/off lever that makes it easy to prevent leaks
• Breathable air mesh back panel for a lightweight, comfortable fit
• Reflective accents for visibility in low-light environments