So this is more of a personal preference than anything -- I just don't find myself enjoying the thing. I can see the appeal behind it, and it can be fun to squish around for a few minutes, but this sort of fidget doesn't really keep me interested. It's a bit better with two hands, as then you can move the marble back and forth without effort, but in one hand it takes more effort and concentration (though granted, it's all minute amounts as it is made for fidgeting). However, it does to be made with quality and the colors are fun. And it clearly works quite well for some people as this was recommended by my therapist as a good fidget toy.its fine but i wish it was a bit less exspensive just for those thingsLoved by allThese are worth the money! Love their anxiety toys.These made from durable material. I didn't really see the appeal in them, so they're probably for a specific subset of people. If you're someone who prefers fidget spinners or clickers, this might not be for you.Cute and fun for all kids. My kids love them!