Good extra storage, but on the smaller side

If you don't plan on storing your gear in it, then it will be great. I want to store gear and am able to only just fit boots and jacket (helmet and trousers get locked to my bike). Was a bit of a pain to fit but i realized it's because i was doing it wrong. Make sure you watch a few videos first. Also make sure you have a luggage rack already. I didn't so had to go and buy one (i didn't know how it mounted). Mostly just me being dumb and new to bikes. Overall it's good. Nice way to store some extra stuff.

Does the job well

I bought this box to fit my 2004 Suzuki V Strom 650. I didn't want anything too big as it was only for my daily commute. It does the job just fine. I can get my lunch, spare clothes and a disc lock in it with loads of room to spare. I can also fit my AGV helmet size XL in there. The only thing I had to do was to add a bit of foam tape around the inside of the lid as it gave a very slight rattle going over bumps but that was me just being picky. It is easy to fit with the supplied base plate and fixings. I really like the way that it unclips leaving the base in place for added security. At this price if you are not looking for a suitcase it does the job just fine.