The cube hpa 15l bottle cage is perfect if you39re out on a long ride or a weekend adventure this bottle cage allows you to ride with a 15l pet bottle so you can keep hydrated throughout and it won39t add any unnecessary weight to your bike this bottle cage has an aluminium construction which keeps strength and stiffness high while keeping weight exceptionally low cube hpa 15l bottle cage features stiff lightweight aluminium construction perfect for transportation of 15l p