Little fingers can't resist these beautiful buttons! Built safely into the sturdy ABS plastic frame are five vibrant silicone bubbles in varying sizes and colors. It's so simple, yet oddly, so brilliantly fun, fascinating, and impossible to put down.Push them all the way in to pop them through to the other side. Delve into the simple delight of poking them with your fingers. It's a perfect sensory adventure kids can take with them everywhere they go! Bubbles are made of 100% food-grade silicone - BPA-Free, fully safety tested.