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The spring mechanism is surprisingly sturdy for the price, and my kid loved tweaking the jump height by repositioning the rubber band. Watching it launch across the living room made the physics lesson stick way better than any textbook diagram ever could.

My kid assembled it in one rainy afternoon and the spring-loaded legs really do launch it across the room. We've already tweaked the angle to make it do backflips, and the physics lesson came naturally as we watched it land.

The spring mechanism is surprisingly smooth once you get it together, and my kid spent a solid hour tweaking the jump height before dinner. Watching it pop across the floor with different customizations is genuinely fun, even for me.