Round profile with smooth center section and micro-knurled shoulders that rolls fast and handles predictably. An excellent tire for touring and trekking due to its thick tread paired with K-Guard puncture resistant belting. Featuring Schwalbe`s standard compound suitable for everday use. TWN - An additional rubber coating on the side that protects against cuts and abrasions. KGRD - Layer from natural rubber reinforced with Kevlar� fibres. The protection standard for every tire from the Active Line