These wobble cushion or balancing discs help get the wiggles out, with less distraction to others. For people with ADHD or Autism, this disc allows them to move in their seats while still paying attention. They are also great for working and strengthening core muscles. Made with a 3-tiered folded construction, this soft disc causes your body to adapt to a new stance while increasing your balance and stability. For yoga and Pilates enthusiasts, this fit disc is a great way to add an extra challenge and increase the intensity of workouts. A firmly inflated seat is more wobbly and bouncy! Softer inflation provides a more stable spot. Size is 13" x 2.5". STOCK COLOUR IS BLUE.