This Push pop-it bubble fidget quadrangle sensory toys for games and learning is good for coping with anxiety, PTSD, and office stress. It is also good for helping kids with ADHD and autism increase concentration. These pop fidget are made with non-toxic, high quality silicone. Reusable and washable toys make a sound like popping bubble wrap when pressed. 4.9" L x 4.9" W x 0.6" H