The set seems well made and materials durable. The wedges hold and adults wait leaning on them easily. Because of the cuts the cubes and the steps do not, but I harbor no delusions of climbing on the myself. This is been a wonderful addition to our basement space so my active little boy can play when it's too cold to go outside. We've had it for about three weeks now and it gets daily play. The material is starting to wrinkle up a little bit just from all of the activity, but it doesn't impact the function at all. I would like to buy additional pieces in the future to add on.