Dual adjust belt webbing.
Comfy 3/8" thick foam.
All Zpacks gear has a two year limited warranty against defects in materials or workmanship. Please see our return / warranty policy.
Made in the USA.
A person's torso height doesn't necessarily correlate to their total height, a taller person can have a shorter torso and vice versa.
To measure your torso height, you will need the help of friend and a string or cloth tape measure.
To begin, lower your neck towards your chest. This will cause the C7 vertebra to protrude at the base of your neck. The C7 vertebra marks the top of your torso. Next wrap your hands around your love handles and then use your thumbs to feel for the top of your hipbones; also known as the iliac crest. The bottom point of your torso height measurement will be along your spine at the center point between your thumbs.
Using the cloth tape measure, follow the curve of your spine from the C7 vertebra to the center of your spine at the top of your iliac crest. This measurement is your torso height.
The torso height on this pack is adjustable up and down within a range for a perfect fit. If your torso is under 17" (43 cm) consider the Arc Scout which is built for shorter torso heights.
To measure your belt size use a string or cloth tape measure pulled tight around the spot on your body that you want the belt to ride. Usually this will be near the top of your pelvic bone. The tape measure should be over top of your hiking pants and shirt. Do not rely on your pant size.
A medium belt has a minimum circumference of about 30" (76 cm) including the buckle. Each belt has about 15" (38 cm) of webbing for adjustment.
Choose a belt with a minimum adjustment a couple inches smaller than your measurement so that you can still tighten it down if you lose a little weight on trail.
The belt on this pack is removable and interchangeable. It can be swapped out.
To remove the existing belt:
- The belt is attached directly to a horizontal frame bar. To remove the belt, pull out gently at the center until the frame bar bows enough to pop out of its holster at the left or right. The belt slides off the bar.
To put the new belt on:
- The pack belt attachment has two pockets (left and right) and two loops towards the middle (left and right).
- Slide the bar through the right loop on the pack. Then through the back of the belt. Then through the left loop on the pack, and into the left pocket on the pack.
- Make sure the bar is all the way into the left pocket.
- Pull out gently on the center of the belt to flex it until the right side of the bar pops into the right pocket on the pack.
- Replacing the belt can be a bit tricky and it is not something you would want to do frequently. The spare belt includes a spare frame bar.
ARC BLAST BACKPACK ON THE AT
I completed hiking the AT Sept 9th, 2018 and switched from my Osprey to the Z-pack Arc Blast for the last 1,335 miles. I love the pack. It rides snug such that it is easy to balance when walking on beam and in strong winds. Matt and the folks at Z pack did the fit in Melbourne and were spot on. The products continue to improve. The rain skirt is about an ounce and held up beautifully in heavy rain and strong winds.