Bike bag to be fixed under the bicycle frame, with easy attachment using 3 straps with buckles and Velcro fastening. The bag is made of durable material, can be closed with a zipper on the side and hides a space (1.5l) for essentials such as a pump, flashlight, etc. On the other side, the bag is equipped with another space for small things with a zipper closure. Parts that are in direct contact with the frame are reinforced for greater resistance to mechanical damage. The sides of the bike bag are also equipped with small reflective elements to increase visibility and improve safety.