Abbreviation F.K.T. means - Fastest Known Time Montreal remembers their running beginnings with Colombia MONTRAIL F.K.T. W shoes. They are made for long runs in uneven surfaces. Seamless textile upper with reinforced elements is durable, breathable and provides amazing support. Elastic material fits the feet perfectly, and the outer heel made from TPU will literally lock it in its place. Ultralight midsole offers maximal cushioning and first-class comfort. Latest model with the stroke height of 18mm at the heel, and 10mm at the toe, features integrated TrailSheild outer layer, and TPU foam under it. Rubber sole with 4mm pattern provides durability and good grip on dry and wet surfaces.