Comes in a peggable clear bag for easy retail sale! Made of high-quality ABS plastic, no peculiar smell, durable and flexible. It has a variety of beautiful colors which open and expand then shrinks back to its original size, like magic. Expands from 7" to 13". Hold in front of your belly, take deep breath in while expanding the ball, exhale slowly while contracting the sphere. Can be used for Kids & Adults with Anxiety, stress relief toys for calming center for classroom, bulk calming fidget toys, ADHD tools, anxiety toys, mindful breathing exercise gadgets, yoga accessory for relaxation. Autism Toys, office desk fidget for adult.