GIVI Motorcycle Rear Box Monokey Aluminum TREKKER OUTBACK Series External Dimensions: H323 x W555 x D454mm Capacity: 58L Maximum Load: 10kg The case body has a robust construction using 1.5mm thick aluminum plates and technopolymer parts to reinforce the corners. Installation is the same as conventional Monokey cases, offering high adaptability. I purchased this in January of this year. I'm selling it because I bought a different top case. I will lower the price every time the number of likes increases. Thank you. I will add more details later.