Many of school children are COGY-size-wise in between S and M. Their body and limbs are big and long, but because of the stiffness etc, their foot sometimes don’t reach the pedal. I discovered the common way of arranging M size COGY for users who are not quite big enough for M size.
loosen the velcro straps under the seat to make the seat sink down, as much as possible. >> bottom will be closer to pedals
back rest extra cushion, firm material. 5-15cm thick
another velcro strap for frame, to add another 5cm in front of the seat >> more space to sit forward on the seat.
L size cushion on M size COGY, to make the seat longer to forward. >> same as above
crotch belt >> so that they will never slip out of the seat.
when arranging extra cushions on the back, use wide sponge cushion on closest layer to their back, to wrap their body for extra stability, and secure with chest belt.
heel straps >> feet won’t come off easily -use shorter pedal cranks >> pedal will be closer to body even when on furthest position.
COGY has 3 sizes, S M L. I’ve been observing, S has much shorter life to be used by one person, compared to M and L. People grow up. It would be great if government, charity bodies, schools etc own S size COGYs and lease out to children who benefit from it. This way, the families do not have to purchase COGY (potentially) only for a few years. It is great for both families (energy, fund, storage) and environment (less waste), and also for local economy I assume.