Directional tread with smooth center section and micro-knurled shoulders for a quiet running tire with low rolling resistance perfect for road and trekking use K-Guard belted offers entry level puncture protection against thorns and road debris 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 GRN - A rubber compound made of renewable and recycled raw materials Standard 16x1.75 305 Wire Belted Bk/Bsk 65 395 50 KGRD/GRN NoUPC/EAN/GTIN: 4026495811927