The Camelback H.A.W.G. is a good size pack for hiking and bicycling. The pack is not too large, but it is roomy enough to hold essential gear. In addition it has a pocket for an MP3 player at the top of the bag. This pack holds 100 ounces of water (3 liters) so it is a good choice for hot climates where a lot of water is needed
This photo shows the size of the small front pocket with a pair of EMT sheers and a Surefire G2 for scale
The 2008 CamelBak Mule offers the ultimate combination of organized and overflow cargo options, including a weather-resistant MP3 pocket, plus enough hydration for over 3 hours on the trail. The The 2008 CamelBak Mule features Dynamic Suspension Harness that maximizes stability, Air Director back panel delivers enhanced ventilation, Easy-to-access MP3 pocket with weather-resistant zipper, and Durable Splash Guard protects pack from mud and abrasion. The removeable waistebelt offers the option to use it for added stability or stash it away, reflectivity on harness and pack increase low-light visibility, and secure cargo pocket includes internal organizer.