[1*shoe cover + 8*flint]

[1 * Shoe Cover]

[20 * flints(Without shoe cover)]

[10 * flints(Without shoe cover)]

[1*shoe cover + 4*flint]

When riding a bicycle, motorcycle, or skateboard, your feet will touch the ground and cause friction. Friction sparks are sure to impress you. Cycling trainer insole adds passion to riding and skating