1 of the building toys had a ball fall off so I was afraid that these could break easily. Other than that if you don't strain the toys they will be okay. My daughter liked them, but they are just another style of building toys.The kids love these! The colors are vibrant. The possibilities are limitless. They are a bit tough to connect at first, but after some use, they connect together seamlessly. They stay together and with multiple layers are sturdy. Perfect for making flower gardens or small bridges for other toys to traipse across. Perfect for individual or duo play!These little building toys are so fun! My kids love the Brainflakes, but these are a little smaller and a little more 3D, so easier for smaller hands to manipulate. My kiddos all enjoyed playing with these and it was fun to see their creativity sparked as they tried different combinations. They may be a little challenging for very young fingers to fit together and pull apart, but I’d say they’re as easy as possible while still holding together well. I’ll need to get something a little sturdier than the plastic zip bag to store them in, but that’s not a big deal. I like how little space these take up, considering it’s a 200-piece set that can make quite a few objects. And when they’re scattered on the floor, at least they hurt less than stepping on a lego.