The Flow models come without hard shells and are therefore light, extremely comfortable to wear, super thin and compact. As the name suggests, this version is equipped with an elastic FlexZip TM zip system , making it easier to put on and take off. The protectors developed together with bike legend Hans Rey are so compact that they fit in any backpack. The integrated Xmatter TM padding concept offers correspondingly high absorption and protection. The Flow ZIP comes with additional properties such as removable padding and a structurally revised AeroMesh TM of the latest generation with better comfort properties and consistent strength.