Back protector for kids. It is like a rucksack, which makes it incredibly easy for kids to wear.
2 different sized replaceable pads.
Fully adjustable, heavy-duty Velcro waist belt. 2-level adjustable front strap.
Hardness Comparison of Material 15-20 ℃
Tail part can be replaced as for JM and for JL. The shoulder strap can also be adjusted to a wide range, which means an excellent fit.
When kids grow, first they become teller and then they tend to fill out. Considering these characteristics of how kids grow this revolutionary system; the Grow-up System of WAKA series is made, by recombining joint parts to make sure it will always fit growing kids.