The Carbon Ion is feathery light and breezy - it's so minimal you'll have to carefully choose your undergarments.
It packs a big performance punch into the porous fabric though, and features 5% of carbon fibres to fight bacteria build-up and static. For hot weather rides it's the best choice. It even outperforms most sleeveless jerseys because it wicks sweat so well and allows a cooling breeze to circulate. There are three small back pockets, a smooth full front zip and two tiny reflective logos.