Whether you are a marathon runner, triathlete or an adventure racer, you don't have to run with your car key. With the Run Lock you can secure it anywhere on your car (door handle, towing eye, suspension coil, etc.) or someplace else where there's a secure point for a padlock. The Run Lock is a portable, weather resistant key safe that can fit just about any car key. Opens with a 4-digit combination that you can set and reset as many times as you want. Keep it hidden for a peace of mind when running.