High volume, balloon-style urban/cruiser tire. Equipped with K-Guard, Schwalbe's entry-level puncture protection. Now more affordable in Schwalbe's Active line. REF - Reflective sidewall striping or hot patch to aid in low light visibility. LTSKN - LiteSkin - Have light, thin sidewalls. Advantages: Weight saving and reduced rolling resistance. KGRD - Layer from natural rubber, reinforced with Kevlar fibers. The protection standard for every tire from the Active Line.