This strong chest bag by IVENCI is made out of water repellent Oxford material. The internal space of the bag is completely structured with several pockets and holders for your phone, wallet, tablet or any other items. On top of that, there are several spots in the straps where you can keep money or cards for easy access. On the right bottom side of the bag there is a handy USB 3.0 port. This can be used in combination with a power bank (not included) that can be connected on the inside of the bag. The chest bag is worn on the chest or the back. The strap is extremely comfortable with decompressing pillows to divide pressure over your shoulder, on top of that it can be moved to the left or right side depending on your preference. The back of this bag is completely ventilated with breathable material, this way you won't get sweaty under the bag. There is a holder for water bottles provided on the side. Model numberFD-540-1TypeSling packColorBlackShapeBoxMain materialWater repellent OxfordLining materialPolyesterPatternSolidStyleVersatileDimensions30 * 21 * 9 cm