The Urban Training Bag® can be used as a supplement to the main luggage. You can also use it to pack clothes, cosmetics and a towel for the gym, fitness or martial arts training. You can compress it into one of your pockets if you need to. The bag is made of Cordura®, which is a very durable material. You will certainly fit everything you need into the main compartment. Additionally, access to it is very easy. There are 3 pockets on the outside, to which you can pack the rest of the necessary elements. There is a Hook & Loop panel on the flap, thanks to which you can personalize the Urban Training Bag® under yourself. An important aspect is the way of fastening the straps of handles and the belt - they run under the entire structure. This greatly increases the strength of the bag.