Feature: 1. Set of 3 balls. 2. Each ball offers a different level of grip resistance. 3. Spandex outer layer with TPE core for comfortable grip and fast rebound. 4. Squeezing the ball helps improve hand blood circulation and strengthen grip. 5. Designed to help reduce physical discomfort and relieve mental stress. 6. Includes a storage bag for easy portability and storage. 7. Suitable as a gift for adults, children, students, teachers, seniors, and more. Specification: Ideal for relaxation during downtime, such as watching TV or light activities. Color options: 3 Grey / 3 Black / 3 Blue / Assorted Grey, Black, and Blue Material: Spandex + TPE Grip resistance: Grey – 40 lbs; Blue – 50 lbs; Black – 60 lbs Diameter: 55 mm / 2.2 inches Unit weight: approximately 65 g / 2.3 oz Package List: 3 x Ball 1 x Storage Bag