Guess what, we're an Authorized Kali Dealer! How cool is that!? QuadCore, a proprietary low density layer, is used to combat linear and rotational impacts. SuperVents, which allow us to use larger airflow vents, while maintaining structural integrity. WEIGHT: 270 g / 9.5 oz CERTIFICATION: EN 1078, AS/NZS 2063-2008 The Kali Protectives Uno Road Bike helmet delivers a modern, stylish package to keep you looking good, remaining cool, and being safe wherever the ?road? might take you. The Uno uses Contego 3 foam to disperse energy in the most efficient way possible during larger impacts and our QuadCore, a proprietary low-density layer, is used to combat linear and rotational impacts.