Start With an Ergonomic Backpack

When selecting a backpack, look for:

An appropriate size: A backpack should not be wider than your child's torso or hang more than 4 inches below the waist
Padded, adjustable shoulder straps to help distribute the weight on your child’s back without digging into their shoulders
Padded back to protect against contents inside the backpack poking into your child’s back
Waist and chest straps to help distribute the weight of the backpack more evenly across your child’s back
Multiple compartments to help position the weight more effectively
Compression straps to stabilize the contents https://whatcanidoforwikimedia.org/which-backpack-to-choose/
Reflective material to allow your child to be seen when walking to and from school[/list]