Brand new, never taken out of the box. Set of 4 boxes, 910g each. Awarded the Kids Design Award, which recognizes products, services, spaces, activities, and research that consider children and child-rearing. [Kids Design Award/Judges' Comments] A unique toy that allows you to easily enjoy sand play indoors thanks to its unique patented technology. With a texture somewhere between clay and sand, it's less likely to make a mess, and using your fingertips to feel its unique texture is expected to stimulate the brain and provide a relaxing effect for adults. Can be used by adults and children, at schools and offices, and even in therapy. Weight/Capacity: Approximately 910g Do not mix with water. #SandPlay #IndoorSandPlay