Though the metrics are listed, when I opened this set, it did look very small to me. Probably best for very young children still crawling or newly walking. I say this because the tunnel is very small, and most older kids would likely not fit through it. And you’ll want to supervise them. The pieces can be re-arranged to personalize or freshen up the structure, but they are a little flimsy and shift some. The Velcro also leaves something to be desired. Otherwise, they are well-made and look durable to withstand toddler-play. You’ll want to have a place to store it. Kids love the bright colors and that they can jump, bounce and climb on something.