New for the summer of 2014 the castelli velo jacket is a ultra light packable jacket with a surprising amount of protection the forcefield fabric is fully windproof and has been treated with a water beading dwr surface the ultra stylish velo jacket packs into its own integrated stuff sack for easy transportation in your jersey pocket no its not got the weather protection of the muur and pocket liner jackets but this small light and packable jacket is ideal as an emergency layer mid ride and t