Here's another blog from a Milton chiropractor discussing: choosing the right backpack for your children.
An improperly fitted or overly heavy backpack can affect your child's health by causing the load they're carrying to be unevenly distributed, resulting in poor posture and muscle strain.
Prevention is important! Make sure you choose a light backpack, with wide padded shoulder straps and a hip/waist strap to help distribute the load properly. Pack only what is need for the day, as the backpack should weigh no more than 10-15% of the child's body weight.
Dr. Amanda Lett, BSc(Hons), DC