Receive realtime feedback on your stride thanks to Runvi’s 30 pressure sensors and two accelerometers. Runvi is an insole full of technology in a svelte design. When you run or walk, Runvi records your cadence, foot-strike pattern, and symmetry in addition to basic running metrics. Suggestions come through paired headphones or phone to help with efficiency, injury prevention, and fatigue. Runvi is on Kickstarter now for $140.