The most common mistake in buying a kid's bean bag chair isn't the design, it's the size: too big and it swallows a small room, too small and it gets outgrown in a year.
Sizing for younger kids and smaller rooms
The Kicker Bean Bag Chair is Gouchee's most compact kids option at 27" diameter by 43" H, sized to fit in a smaller bedroom without dominating the floor space, and easy for a younger child to actually climb into on their own.
Sizing for growing kids and shared spaces
The Fussball Bean Bag Chair and Malibu Bean Bag Chair run larger, closer to a standard adult bean bag footprint. Both hold up better as a kid grows into their room, and both work fine as an extra seat in a shared playroom or family room, not just a bedroom.
How to actually measure before buying
Leave at least 2-3 feet of clearance around wherever the chair will sit, since bean bags compress and shift shape with use and need more real floor space than their listed dimensions suggest. Measure the room, not just the chair.
Bottom line
Smaller room or younger kid: Kicker. Growing kid or shared space: Fussball or Malibu.