With the MountainBox you can transport a replacement hose up to 29 x 2.35 or other important things under all bottle holders of the Ninja Master series.
If the worst comes to the worst, a quick turn is all it takes for the fastest possible access. Compatible with 26 x 2.5 / 27.5 x 2.5 / 29 x 2.35 hoses.
Material: EVA foam
Weight: approx. 58g (manufacturer's specs)