NSI Tiny Wubble Fulla Marbles - Mini Bubble Stress Ball for Office, Kids Play & Anxiety Relief - Fun Sensory Fidget Toy for Adults and Children

Rated 3 stars for durability. The ball itself is cool, much smaller than expected. My son made quick work of it and there were soon beads all over the floor for me to clean up. My son loves this kind of sensory stuff , so if the manufacturer spent a little more on the material to make this more durable, I would consider buying again.