These bags are a game changer for me. They hold a lot of stuff. Very handy for going shopping, going to the gym, taking trips etc... as the bags swallow up so much. There are no other bags like it that I could find in the Thai market, nothing from Triumph or Givi either. Most of the large bags do no fit the Speed 400's exhaust pipe. They are big enough for a smaller spare helmet, like a commuter one, rain gear etc...
I like the waterproof liners and the waterproof covers. The bags are within the width of the handlebars, so no issue going through Bangkok traffic. Delivery was quick but did require an additional payment for shipping to Thailand that you cannot make while purchasing the bag, so do not be alarmed by that. I bought the bags and the rack together. I highly recommend these bags, especially for the Speed 400.