If a backpack is too heavy, a child tends to carry it high and lean forward to carry the weight, which is bad for posture. It's important for youths to use both shoulder straps. Surveys show that 31 percent of students carry backpacks by one shoulder strap, which causes a disproportionate shift of weight to one side. Straps should be padded and adjustable so the backpack can be fitted to the body. If straps are too loose, the weight of the pack can pull the shoulders back, resulting in neck and back pain.
Padded packs are also more comfortable.
The increasing popularity of compartments is helpful in positioning contents to distribute weight more evenly. Remind children that any objects with points should be packed away from the area that will rest on the back.