Overall the box is great. I can fit 2 full face helmets in with ease. I use it to carry my work bag so I don't have to wear it while riding, as well as my hiploks and chains for parking in town. When parked up I store my helmet and jacket. Feels securely attached and looks good - although maybe a little like a food delivery moped box from a distance! Only dropped a star because the locks feels a little flimsy and the universal mount was a little bit of a faff and I need to drill to get it to fit securely. But for the price I won't complain