Mad Mattr is one of our favorite things in the store. It's kind of like Kinetic Sand in that it never dries out, and it's kind of like Play-Doh in that it molds really well. Basically, it's the best of both worlds. Our favorite way to play with Mad Mattr is with the builder tool. Use it to easily make bricks that really connect together! And then finish the job with a satisfying smush. Check our Instagram for a video! Made in Sweden! Non-toxic, gluten-free, and recommended for ages 3 and up.