CamelBak hydration systems have become very popular over the years, allowing you to store water and drink it without using your hands. However, they have been known to be “overbuilt,” making them less efficient than they are intended to be. One issue with the CamelBak MULE is its weight. The CamelBak Mule Lightweight Hydration Pack 2010, however, has dropped some of the unnecessary while maintaining its utility uses such as storage, and now actually has comfort. It features a big pocket where you can store pumps and other things, and a smaller pocket for little odds-and-ends such as keys, tools, etc. There’s even a handy cell phone/ipod/glasses holder at the top of the harness. The new-and-improved CamelBak Mule Lightweight Hydration Pack 2010 has shed 200 grams, is a lot more comfortable, and is cheaper than its bulkier counterpart at $130.91.