Area of use: off-road. Tyre size: 28" x 1.5" (71.12 x 3.81 cm) (outside diameter x width / height in inches). ETRTO standard: 40-622 (tyre width - rim outer diameter in mm). Fits tires: 28" x 15/8 to 1.75" (71.12 x 4.45 cm) (outside diameter x width / height in inches). ETRTO standard: 35 to 45-622 (tire width - outer diameter of the rim in mm). With protective insert in the tire for more puncture resistance, protects against glass splinters, nails, thorns, etc. Examples of use: replaces the outdated or damaged tire on the bike.