I have a 3 1/2 y.o. and 20 m.o. and they LOVE playing together in this "fun center". I love that there are two tents so they can each have their own space. Tunnel is a little tight for older one but even I can commando crawl through it; diameter could've been a few inches bigger to feel less clautrophobic but... It's a minor issue. Have noticed one pin hole damage since setting it up but, despite thin material, the product seems well-constructed and I don't intend to take it outside so will keep an eye on the hole. Worth every penny!