The Sport-Roller Core as a single bag is an excellent choice for city cyclists looking for a cost-effective entry into biking without compromising on quality or sustainability. Whether on the front or rear luggage carrier, this practical bicycle bag effortlessly transports everything you need in the city. A trip to the countryside, a visit to the gym, or a small shopping spree, are easily possible in any weather, as the minimalist bag is 100% waterproof.In addition, the bags are equipped with high-visibility reflectors made of 3M Scotchlite reflective material on the sides of the bag to increase road safety. Due to its size, the Back-Roller Core is also suitable as a bicycle bag for children’s and youth bikes. Further practical details Optional shoulder carrying strap E172 available Can also be worn as a backpack with the optional Carrying System for Panniers