Amazon.com Product Description
Head out for a weekend of light camping or a heavy day or traversing the urban jungle with the Coleman Exponent 8576-675 Weekender II, which features a 1680 cubic inch capacity. This panel-loading pack has one compartment, one zippered pocket and three mesh pockets--perfect for storing water bottles.
Other features include compression straps, moisture management polyester mesh, a sternum strap with added elastic for more freedom of movement, pre-curved aluminum stay for added support, and hydration system capability with a hydration tube exit port and internal compartment. Water resistant and durable, it's made of a 600D high density ripstop polyester and oxford weave with polyurethane coating. The hip belt accommodates waist sizes 24 to 52 inches.
Amazon.com Backpack Guide
Finding the Right Backpack
For extended trips into the backcountry, there's no getting around the fact that you'll have to carry life-sustaining supplies on your back. Here are some things to keep in mind when shopping for a backpack:
Internal vs. External
Up until late 1970's, external frame packs--which consist of an exposed, lightweight metal frame attached to a fabric pack-bag--were the only thing going. In recent years, though, packs that place the support structure of the pack inside the pack, known as internal frame packs, have boomed in popularity.
The good news about internal frame packs is that they hold the weight of your load close to your body, making it easier to maintain your balance on uneven terrain. Meanwhile, internals provide stiffness and support, but they are not completely rigid, which makes them more flexible when you're doing active sports. With the added flexibility comes a high degree of compressibility, meaning you can use the pack's compression straps to cinch down your load and keep items from shifting and throwing you off balance. Internals also sport slimmer shapes that allow for more arm movement in all directions--another big plus for off-trail bushwhackers, skiers and climbers. Last but not least, internal frame packs offer a greater range of adjustability in the shoulder harness and hip-belt than external frame packs.
There are some negatives for internals. First, once packed, it can be difficult to grab needed items out of them quickly. And because internal frame packs consolidate the l