Perfect: For those who suffer from ADHD, autism, anxiety, and hyperactivity disorder. Stress: Helps to relieve stress and create calmness and concentration. Types: Choose from either a fidget pad with 8 functions or a fidget pop keyring! Size: The pop keyring is 8*7cm and the fidget pad is travel size so you can store it away in your bag! Additional: Perfect for on the go! Fidget Gadgets | Living Social