Durable material – Made of 100% thermoplastic rubber (TPR), hypoallergenic, nontoxic, reusable, recyclable, and phthalate and latex fee. Our stress relief balls are lightweight, durable, and safe for kids and adults alike. Wash with warm soapy water to clean.
Three strengths levels: This package comes 3 hand therapy balls with different colors and 3 types strengths levels are contained.The resistance levels include: Yellow (slightly soft); Orange (moderately hard). Blue(firm hard) Please choose a suitable resistance according to your own need. Fit for men, women and children.
Wide range of use – It would be a wonderful hand exerciser for people who often do typing, driving, writing, climbing job for long time, also workable and benefited for stroke rehab patient. With exercise and training, you will make gradual progress of finger for guitar, piano, violin and rock climbing.Nice training ball for hand injury.