Cornerstone offers the only AlterG VIA system in the greater Sandpoint region. This NASA technology uses differential air pressure (DAP) to offload your body weight- up to 80% of your weight in precise 1% increments. The VIA feature tracks your gait patterns and helps identify abnormal gait and guidance on how to correct. Ever wondered what it would feel like to walk on the moon? Now you can know first hand through the AlterG VIA.