Durable silicone, safe, and tasteless, this push pop bubble keychain is very helpful to relieve stress and help restore the mood. Press the bubble down and they make a slight popping sound. The fidget bubble is small in size and light in weight, you can easily put it in your pocket and carry it with you. Suitable for students, office workers and daily fun. 1 1/2" W x 3 1/4" H