This push pop bubble keychain is made of durable silicone and measures 1.38 inches*3.27 inches. It is very helpful to relieve stress and restore the mood. Press the bubble down and they make a slight popping sound. The fidget bubble is compact and lightweight enough to easily slip into your pocket and bag.Split-ring and swivel hook allow it attach to your trousers,backpack and more.Suitable for students, office workers and daily fun.