A sleek rear road fender with integral glow (iGlow) technology for safety at night and low visibility conditionsQuickly mounts to the seat postHighly polished under side prevents dirt buildup1 super bright LED2 x CR2032 batteries (included)60 ~ 100 hrs run timeRearRoad/Hybrid700c x 35mmPlasticBlack25mm / .98`UPC/EAN/GTIN: 883466006973