I’ve gone through dozens of tank bags and never been entirely happy. There always seems to be ‘something’ missing. Then I thought I’d try the sandstorm. This bag is by far the best Tankbag I’ve tried. Firstly it’s 100% waterproof, which for me is a must. Then the outside of the bag is covered in loops and handles for stowing stuff, which is really handy at ferry and train terminals. Inside the bag is bright red! Way easier to see stuff in the bottom of the bag. Also there is a document folder (very handy) which stashes inside the lid, then there are separate holders which are all attached by Velcro so you can attach them inside or outside the bag to customise it to your own liking. There is a divider with a zipped pocket and window, a waterproof zippered pouch, an elastic loop holder, and another with small slots for pens etc. The bag is attached to your bike with a yoke strap and then elastic rok straps. One thing I have noticed is that even though the bag has Rok strap attachments, the clips don’t fit my existing Rok straps.