The push pop bubble toy is made of high-quality silicone, 100% environmentally friendly. This educational toy is most suitable for children over 5, both training their logical thinking ability and relieving their anxiety during playing. This pop fidget is a great sensory tool you fidget with again and again. Just press the mouse bubbles down and they make a slight popping sound; then flip it over and start again! Endlessly reusable and washable, too. Details: Approx 5" and made of silicone. Great for people with anxiety, autism, and sensory disorders. If you love popping bubble wrap you will love this!