SWB ROAD CRUISER 26x1.75 ACTIVE TWIN K-GUARD BK/BSK/REF GN-COMPOUND WIREDirectional tread with smooth center section and micro knurled shoulders for a quiet running tire with low rolling resistance perfect for road and trekking use Green compound is made from renewable and recycled raw materials Twin Skin An additional rubber coating on the side protects against cuts and allows for uniform coloring KGRD Layer from natural rubber, reinforced with Kevlar fibres. The protection standard for every tire from the Active Line