After much research, I just purchased the Magic Castle Bounce House for my twin daughters for their 4th Birthday. The delivery was very quick and the set up was very easy. The entire bounce house inflates in under a minute. The quality is excellent, resembling more of a commercial grade. My twins bounced in it non-stop and there was plenty of room. I expect they will love this present for many years to come and there is certainly room to grow with it. I would highly recommend this to anyone looking to purchase a bounce house.