<p>**70 oz. capacity (2 large water bottles)<br /> <br /> **Dimensions: 17"x9"x3.5"<br /> <br /> **Weight: 5.12 lbs filled, .43 lbs empty<br /> <br /> **Easy filling with external access to reservoir<br /> <br /> **Reflectivity on Harness and pack for better low-light visibility<br /> <br /> **External zip pocket for keys and essentials<br /> <br /> **Secure bungee cinch system holds extra clothing<br /> <br /> **Low profile design keeps pack stable and doesn"t interfere with helmet</p>