CST`s Brooklyn tires feature a fast rolling deeply siped tread with a micro-textured surface and durable sidewalls perfect for utility and cargo bikes . Thick EPS anti-puncture layer and reinforced sidewalls. EPS - Exceptional Puncture Safety offers an added layer of proprietary rubberized poly-fiber material between the tread and the casing to help prevent punctures. REF - Reflective sidewall striping or hot patch to aid in low light visibility. E - designated tires are designed to specifically withstand use on E-Bikes with an upgraded casing and bead