It's made of silicone.Ust press the mouse bubbles down and they make a slight popping sound; then flip it over and start again! Endlessly reusable and washable, too. Non-toxic, tasteless,will not cause any harm to humans and pets.Price includes 1 color 1 side imprint on white silicone.Other size and shape is aviliable. Ideal gift for your friend.Welcome inquiry
