This is a well thought out bike bag, and clearly is not just a bag that may work whilst riding. As a X-country and trails rider, this bag comes into its own as it does not have pouches sticking out which when navigating your way through a dense forest, can cause a problem as the pouches can and do become snagged on brenchs. But with this bag due to the lack of pouches sticking out this seldom happens. However the bag could do with an adjuster strap on the top part of the bag which sits over the shoulders. As there is quite a bit of movement which can off-balance the rider and bike, especially when a 2ltr bladder is also in the bag and other kit. The materials could be a bit thicker as I think over time, things like the tools will rub a hole through the material. Nice to see a bit of "out of the box" thinking this is in regards to the two pockets on the sides merging into the waste strap, however these could be a bit bigger.