The endura hummvee convertible jacket is the ideal all year round jacket that provides essential waterproofing and breathability for better performance on the trails the detachable sleeve feature means that it can turn in to a stylish gilet on demand which is great for the warmer months the endura cycling jacket uses waterproof zips with snap down pullers on the arms that allows for easy conversion to a gilet while the mesh back panel on the gilet offers optimal airflow and the 25 layer wate