125% more safety - with high-strength insert to protect against nails, glass splinters and thorns. Field of application: road. Tread: lightly profiled for low rolling resistance. Tyre size: 12 1/2 x 2 1/4 (outside diameter x width x height in inches). ETRTO standard: 62-203 (tyre width - tyre diameter in mm), French size: 320 x 57 (outer diameter x width). Examples of use: replaces the outdated or damaged tire on children's bike or scooter, also suitable for stroller.