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- isoflex™ is perfect for relaxing hand exercise & stress relief. strengthen your hands while chillin' & enjoy the soft yet firm wonder that is an isoflex™ stress ball. squeeze, knead & squish ur way to zen & a stronger grip, too!
- stress relief, hand strengthening & massage
- colors: blue, red, purple, green
- double-lined with natural latex for extra durability
- high-quality double protection to prevent breakage
- makes a cool gift for athletes, musicians or anyone!
- country of origin: usa