The Applied Geometry suspension for Jandd internal frame packs is the result of our continuing effort to create the most indestructible, functional, and comfortable pack system possible. Standard features that make Jandd packs easy to use and comfortable to carry include the unique shoulder compensator system, Fastex wedge, multiple belt- and pack-sizing, quick-draw water bottle pockets, functional fanny pack hoods, and tough, virtually bombproof construction. Other improvements include the addition of pressure-formed, anatomically-curved "S"-shaped shoulder straps complete with a neck-width customizing system. We redesigned the packs' lumbar pad, utilizing multiple layers of closed-cell cross link foam backed with an HDPE stiffener and anatomically pre-bent stay to create the most stable and comfortable fit you have ever experienced, regardless of the weight of the load. On the exterior of the lumbar pad, we've added a friction pad constructed of durable Toughgrip material to prevent slippage in wet conditions. The belting system has been greatly improved by eliminating the open cell foam and adding an HDPE plastic sheet at the rear where the belt interlocks with the lumbar pad. To round out the new suspension, we lowered the load stabilizer straps to the bottom corner of the pack, perfectly interfacing with the highly innovative 1/4" horizontal stabilizing rod. Pulling on the stabilizing straps transfers the load perfectly to the hip system, without hindering movement at any weight or under any conditions. Jandd's mission is to produce the most durable, comfortable, and functional packs available. See your authorized Jandd dealer for assistance with fitting, if necessary, or contact Jandd's consumer service at (760) 597-9021.
There are three landmarks used in fitting a pack: the hip belt (11) centered at the hip bone; the lift strap locator at the collar bone (2); and the lift rising at an angle between 30 and 45 degrees from horizontal (2). The following steps will walk you through the process, so keep your landmarks in mind and the result will be a perfectly-fitted pack.
First, load the pack with 20-30 pounds of gear. Try to pack the weight as you would when actually carrying the pack–if it is one dense lump at the bottom of the pack, it will be difficult to fit the pack properly.
Second, remove the back pad (1) this will be replaced after fitting. Then, loosen all straps which include lift straps (2), shoulder straps (3), anti-sway straps (4), and reverse lift straps (5).
Third, grasp the Fastex wedge (6) and pull the release ring to move the wedge to the top of the pack. Then, pull the lift strap locators to their lowest position.
Fourth, ensure that the shoulder pads (3) are spaced at an even distance from the wedge (6) for your height. For small-framed people with thin shoulders, the pads should be touching the wedge; for average-sized people, allow about an inch of webbing between the wedge and the pad. For those with weight-lifter shoulders and barrel chests, start with at least two inches of webbing between the pad and the wedge. Pictures 7, 8, 9 and 10 illustrate how to adjust the system by snaking the webbing in or out of the 2 inch sliplock buckle. Micro adjustments of the shoulder compensator will be addressed later; however, before you proceed, it is essential that both shoulder pads have the same amount of webbing between the pad and the wedge.
We recommend having a friend or experienced salesperson assist with the next few steps. Put the pack on and tighten the belt with the center seam on your hip bone (11). If you prefer the belt to ride a bit higher or lower, make sure the belt is at that position before you proceed. At this point, you are essentially wearing a 30-lb fanny pack; have a friend hold the pack in to your back, but do not tighten the shoulder straps.
Have your friend hold the lift strap locator (12) at your collar bone. You should then pull webbing through the shoulder strap adjustment Tensionlock (13) until all slack is out of the webbing and the bottom of the straps are touching your chest, a few inches below your underarm. If you are a smaller person, you may want to slide the lift strap locator up an inch or so. Now have your friend push the wedge system (6) down, until the shoulder pad wraps smoothly around your shoulder and the lift straps (12) are rising at a 30- to 45-degree angle off horizontal when pulled snug. The wedge (6) should end up approximately one inch below the top of your shoulder blades with the lift strap locator (12) still at your collar bone. NOTE: All packs are shipped with the lift straps (12) in the top set of Tensionlocks. If you are on the lower fit range for pack sizes, you should choose the lower set of Tensionlock buckles to attain the proper angle. For smaller people, it can also be useful to slide the lift strap locator up an inch or two to increase the lift strap angle.
If the wedge is far below your shoulder blades, remove the pack and shorten the shoulder compensator (7,8,9 and 10). Alternately, if the wedge is too high, lengthen the shoulder compensator. Continue adjusting until you have the wedge in the correct location. Pull up on the reverse lift straps (5) for a snug fit. Slide the sternum strap (14) up or down as desired.
If you need to adjust the width of the shoulder pads in or out from your neck, slide a credit card under the diagonal strip at the top of the pad (15) to release the hook and loop.
In the field, when putting on the pack, loosen the lift, shoulder, and reverse lift straps (2,3 and 5). Put the pack on and tighten the belt at your hip bones. Pull the shoulder straps to a comfortable tension and adjust the lift straps (12) to shift the weight to your shoulders or hips as desired. Then pull the reverse lift straps up tight. The anti-sway straps (4) should only have moderate tension when in use mostly on rough terrain. Otherwise, the anti-sway straps should not be needed. As you hike, adjust the lift strap to shift the weight between the legs and shoulders as desired.
The 6061-T6 aluminum stays on all Jandd packs are pre-bent at the factory to accommodate most backs. Ideally stays should closely follow the contours of your spine. If customizing is needed, follow the optional stay bending instructions.
Finally, you have your pack custom fit. Now it is time to pack your Backpack.