Good little bag
"Small enough to not be cumbersome but actually fits everything I need - replacement tpu tube, multi tool, tyre levers, co2 inflator and 2 co2 canisters strapped underneath. Has a clever mounting system too. It isn't fully waterproof so keep your stuff in an unsealed sandwich bag inside the bag - that will keep them dry but allow ventilation so they don't end up trapped in a sealed bag with any moisture."

