I bought this for my dual sport Honda CRF250L. It's nice that you can put your phone and wallet there and have a place to store other small things. It's not a big bag but it's exactly what I was looking for. Check the manufacturer's website for specs or visit YouTube if you're concerned about sizing. 4 magnets work well (I can only use 3 due to the size of my fuel tank) but I imagine this bag would work just as well for many sport bikes. The zippers seem to be of good quality and I'm sure this bag will last a long time. Buy it with confidence!