If I have extra space in a backpack, am I better packing it short and fat or tall and thin?

Neither. It's important to pack your bag so that it is balanced. If you pack it too tall, you're going to be top heavy and using your core a lot to keep you balance. If you pack it low and fat, then you're going to be hunched over because your bag is going to be pulling you back. You want to pack your bag so that when it's sitting on the ground, it falls forward. You accomplish this by putting your bulky things in the bottom, then your heavy things closest to your body up behind your shoulder blades.

I have an 80L single compartment bag that I will often take on weekend trips. When I pack it, I adjust the straps so that it emulates a 50L bag.

Don't make your bag too tall, or too fat. Pack it so that its all proportionate to the size of the bag you would need for the amount of gear you're carrying.

posted over 7 years ago

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ShemSeger‭

1774 reputation 82 481 195 0

Tall and thin.

There are 2 rules in weight distribution with a backpack.

1. As close to your back as possible
2. As high as possible (if not traveling in steep terrain, such as mountains where it is safer not to be top heavy)

Both of these rules will bring the center of the mass on a backpack as close as possible to your own without the excess need of leaning forward.

It may feel awkward at first to travel with a top-heavy backpack but the problem goes away with a decent backpack adjusted properly.

1. Ensure the backpack is suitable for your anatomy (torso length and hip size)
2. Have a decent backpack with good compression capabilities
3. Pack the backpack properly
4. Adjust the backpack properly

Backpack fitting

1. Adjust the torso length
2. Adjust the vertical metal rails (if available) to the curvature of your back
3. Adjust the hip belt to your hip size

Backpack adjustment - from https://www.rei.com/learn/expert-advice/backpacks-adjusting-fit.html

Step 1: Hipbelt

• Put the pack on. Move the hipbelt until the padding hugs the top of your hip bones (your iliac crest). If it sits too low or too high, tighten or loosen the shoulder straps to raise or lower the hipbelt.
• Fasten the hipbelt buckle and tighten it. Be careful not to overtighten the belt: It should be snug and secure without uncomfortably pinching your hips.
• Check the padded sections of the hipbelt to make sure they sit on the top of your hips; if not, readjust your shoulder straps and hipbelt. Try different tensions until you find the sweet spot.
• Belt padding should extend slightly beyond the front point of your hipbones. You also need at least one inch of clearance on either side of the center buckle: If you have less, call REI to see if a smaller belt is available.

Step 2: Shoulder Straps

• Pull down and back on the ends of the shoulder straps to tighten them.
• Shoulder straps should wrap closely around your shoulders, but they should NOT be carrying significant weight. If they are, you'll be putting undue stress on shoulder, neck and upper-back muscles.
• Check to see that the shoulder strap anchor points on your pack are 1 to 2 inches below the top of your shoulders, roughly at the top of your shoulder blades. If not, then either your hipbelt is at the wrong level or your pack’s torso length is incorrect.
• Vary shoulder-strap tension by tightening and loosening the straps. Learn how to adjust the straps in small increments so you can relieve any pressure points or pain during your hike.

Step 3: Load Lifters

• Load-lifter straps connect the top of the shoulder harness to an anchor point near the top of the back panel. When tensioned, they should angle back toward the pack body at roughly a 45-degree angle.
• Don’t overtighten the load lifters! Excess tension that feels great initially can pinch shoulder joints and create discomfort. Strive for snug—not stiff—tension. If you notice a space at the top of your shoulder harness, loosen the load lifters and try again.

Step 4: Sternum Strap

• Slide the sternum strap until it’s at a comfortable height across your chest: roughly an inch below your collarbones.
• Buckle and tighten the sternum strap to set the shoulder straps at a width that allows your arms to move freely.
• Avoid the common mistake of overtightening the sternum strap. This can distort the overall fit of your harness, constrict your chest muscles and restrict your breathing.

posted over 7 years ago

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Jani Hyytiäinen‭

81 reputation 0 24 8 0

I prefer to pack tall (not much above shoulders though) and thin for better weight distribution and balance, easier maneuvering though bush and general freedom of movement. I find short and fat tends to put weight too far behind you, and makes the pack unbalanced. It also encourages sloppy packing of the pack, and the light weight (compared to longer trips) means I pay for being a little less disciplined than needed....

When in this situation, I pull in the lower compression straps, pack the pack and once packed, pull in the top ones. First pack before the trip I maight unpack a few times to get them just right, but after a few trips, you get pretty good as guessing just how much you need.

posted over 7 years ago

CC BY-SA 3.0

System‭

2019 reputation 180 537 246 0