They are lightweight and made well enough for my toddlers to set up creations on our hardwood floors with. Some of the pieces are ever so slightly flawed, so if you are super into dominoes and a perfectionist, these may not be for you. They do topple over quite easily, often prematurely, but when the fingers setting them up belong to three and four-year-old hands, it’s hard to say who’s to blame. The fact that they are very light weight may not be working in their favor. Anyway, my kids are delighted with them and that’s all that matters.