Pros: Very effective in aiding elimination of triggerpoints, compact roller Cons: 1. Used for 3 months upon purchase to treat triggerpoints, sat unused for 12 months, went to use and it was completely dead. 2. Took 5 business days before receiving Grid Vibe Consumer Care response to my email inquiry about the product. 3. There is no repair or troubleshooting help, product out of 1 yr warranty Grid Vibe was sorry about my experience, but I am out $100 for an inoperable product that worked all of 3 months, a real bummer. Caveat Emptor
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