It's a shame Ortlieb or some other distributer doesn't sell in North America the basket portrayed with the Ortlieb dohickie adapter. I have about 5 of these baskets I brought back from Germany where there are sold in various sizes and all fit on rear racks perfectly. There are loops on the bottom of the basket to hook on to the standard rear racks found on European commuting bikes. Zip ties are all that are needed to keep them from rattling. Bungee cords work as well. The large ones cost about $5 or $6 last time I bought them. Lighter and hold more than milk crates. For light loads, mouse trap rear racks don't even need zip ties to secure the basket. In addition the built in handle makes them very portable and handy shopping baskets for small items.