A proper backpack is worn correctly and snugly on the back, using two shoulder straps.
A backpack used properly is not overloaded and has weight distributed evenly.
A good backpack is not too heavy, and does not weigh more than 15% of the carrier's weight.
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Backpacks are designed to distribute the weight of the load among some of the body’s strongest muscles. However, backpacks that are too heavy or carried incorrectly can injure muscles or joints and contribute to back pain and other problems.
The Proper Backpack Is:
A Good Backpack Has:
If a backpack forces the wearer to lean forward, it’s overloaded and some items should be removed. Carrying an overloaded backpack can cause discomfort and, over time, lead to back injuries and other problems.
If the backpack weighs more than 15% of the carrier’s weight, it’s too heavy. To determine the proper maximum weight for a backpack, multiply the user’s body weight by 0.15. If a heavier load is unavoidable, consider using a backpack with wheels.
Carrying too much weight or wearing a backpack the wrong way can lead to:
