If your child isn't wearing their backpack properly, it can cause some pretty serious injuries.
It all boils down to the way the weight is distributed on a child's back.
Dr. Doug Adair, a chiropractor at McCallie Chiropractic and Rehabilitation Center, said a good rule of thumb for parents to go by is make sure the total weight of the backpack stays between 5 and 10-percent of a child's body weight.
Anything more could be dangerous.
He also said the placement of the backpack on the back in important. If it's too high or too low, it could cause back, neck or even shoulder pain.
"The backpack should cover 70 percent of the back, should always be carried above the belt line, and never above the lower shoulder blade, the straps should be tightened so it's in that area. Not too tight, not too loose," Dr. Adair added.
Compartments in a backpack also help distribute the weight evenly and help prevent things from moving or sliding.
If your child starts telling you about pain they may be having, check out the contents of their backpack.