Bionic Positioner XF

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Extended version provides more support and helps create a more powerful ball roll Durable aluminum construction Light-weight for maximum comfort Provides options for multiple wrist cup and lateral positions 1-year limited warranty Get the perfect fit for your Bionic Positioner XF. On your dominant hand, measure from the base of your palm to the tip of your longest finger, in inches. (Size of Hand = Size of Positioner) 6 3/4" – 7" = Small7" – 7 1/4" = Medium7 1/4" – 7 3/4" = Large7 3/4" – 8" = X-Large Show more