Stress relief squeeze balls are proven to relieve stress as all of your energy and focus is being redirected and taken out on the stress ball. The advantage of squeezing is renowned to releases some kind of energy that induces you to . These stress balls have been handpicked to help kids with autism or ADHD focus and manage daily stress. The earth design on these educational stress balls will appeal to any child and adult alike while improving grip strength, dexterity, mobility as as fine and gross motor skills. size: 7.6cm diameter Material: Polyurethane colour: blue-green Package Contents: 12 x Earth squeeze ball Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.