Our most popular and classic fidget Hand spinners made of improved ABS with quality center bearings. Smooth High Performance Bearing makes it light - Fast and Long Spin Times. This stress reliever is easy To Carry and has ergonomic three Rings for easy spinning. It's precise balance and weight are packed into a great size that fits easily in your pocket! It is suitable for classroom or office and helps boosting your concentration and focus, especially helping with ADHD, ADD, Hyperactive people!