When choosing a school bag for your child consider the following points:

•  Make sure that the shoulder straps are adjustable and at least two inches wide.
• Select a bag with individualised compartments.
• If choosing a back pack style of bag (which I highly recommend) it is advisable to have a hip strap,
•  waist belt or frame to redistribute the weight of the bag from the shoulders and back to the pelvis.
• If it is allowed by the school, opt for a bag with wheels so that it can be pulled.

Details you can see: 

Mesh side bag , convience for bottle and umbrella .

Smoothly puller , brand on the plastic or mental also no problem ,

more personal and  advertise.

Contrast color ,good for kids intellectual development.

Making changes to how your child’s bag is packed and worn can help as well:

• Bags worn on the back should fit tight to the body and not hang below the lower back.
• Never carry a bag on one shoulder. Use both shoulder straps
• pack the heaviest items closest to the back.
• use the compartments to fill with items that could shift during movement.
• Notice if your child is leaning forward when walking with a back bag on. If so, it is too heavy.

Similar kids school backpack