Rainboh Teenie Nee Doh Stress Balls (Set of 6) – Annie's Blue Ribbon General Store
Amazon.com: Neo G Hand Rehabilitation Silicone Ball - 3 Resistance Levels - Helps Improve Hand Grip, Mobility & Function, Strengthen Fingers, Hands & Wrist/Forearm – Class 1 Medical Device – Blue = Medium : Health & Household
Neo G Hand Rehabilitation Silicone Ball – Neo G USA