How Heavy Is That Backpack? Bottom Line: Even though an iPad can store an entire library worth of books, most children still attend each day carrying an oversized and overweight backpack filled with heavy textbooks. While it may not seem like a big deal, recent studies have shown that carrying the weight of a typical backpack is one of the top reasons why children suffer with back pain. A vast majority of children wear rucksacks every day that, on average, weigh 15 lbs or more. That’s a heavy bag for a small child! Over time the stress of the load can result in back pain, a rounding of the shoulders and postural changes. The spinal compression caused by a heavy school bag often has children leaning forward to compensate, which begins a vicious cycle of postural issues, compensation and pain. Here are a few key facts: Up to 30% of kids may suffer from back pain due to carrying a heavy backpack. Limiting the total weight of the backpack to less than 10% of yo...