This handy little bag started life as an add-on bag for every ChaseHarper bag with the elastic draw strings. Certainly handy as the catch all for things likes keys, cell phones, glasses and what not but with an added twist it's also this neat little strap on bag. By adding holes (can you do that?) in the back and incorporating non-elastic cord with locks this bag becomes a semi-permanent mini-saddle bag. That's right you can attach it to practically any tube or part of your bike by capturing the bag with the drawstrings and pulling it tight. Four (4) mounting points at each corner (diagonally placed for max flexibility) make it secure and virtually universal.