Height-wise the 7yo has outgrown the canopy frame, particularly wearing a helmet. They still managed to squeeze under the detachable top cover (with backpacks) for a few kms trip home in pouring rain.
This is the L&H canopy, the canopy tube frame extends outside of the width of bike frame. Internal space between arm rests is 49cm, so I'd say there's a bit over 50cm usable sitting space.
Kids 7 and 4, Bullitt foldable seat + canopy.
Height-wise the 7yo has outgrown the canopy frame, particularly wearing a helmet. They still managed to squeeze under the detachable top cover (with backpacks) for a few kms trip home in pouring rain.