If your child's backpack contains a small library, consider this: More than 7,300 kids are treated for backpack-related injuries annually, according to the U.S. Consumer Product Safety Commission.
A 50-pound child should carry no more than 7 to 10 pounds, or 15 to 20 percent of his body weight. Check out the infographic below for tips on wearing a backpack correctly and lightening the load.