Heavy, clumsy backpacks weighed down by books are a thing of the past. RollJet ensures a safe, fun ride while carrying your bag for your child. Encouraging movement and with an ergonomic form, the combination safeguards your child against back problems due to constantly carrying those weighty backpacks. They are super lightweight and easy to attach and release from the scooter and are made of the highest quality materials and components, so there’s no need to buy new backpacks every year. These are built to last.