100% Polyester Attention : Please select the desired clothes based on the picture Size description : Please observe strictly our size specifications when selecting the size. Zipper : High quality zipper, durable, can be tested thousands of times in environments below zero, but can also be pulled smoothly. Style :Classic fashion design follows fashion trends. The high-quality materials used in sublimation printing technology can retain bright colors even after washing and never fade. Professional bike sweatshirt : Three back pockets make your things comfortable, such as your phone, snacks and bike tools; Two reflective elements on the back ensure that you stand out at night in poor light and dark environments. The non-slip silicone design can prevent clothing and sleeves from moving upwards during exercise, making cycling more comfortable and freer.