O'Neal Matrix HelmetWith great value and mountain-bike-ready protection, the O'Neal Matrix Helmet lets you hit the trails in style, confident your head is covered when it all goes wrong. If you're like us, it's the speed and flow of mountain bike trails, often on the edge of control, that provides the buzz, the endorphins and the rush of mountain biking. But when you push just a bit too hard, crashing is part of the game - it's here the Matrix Helmet provides head protection you can trust.The Matrix features O'Neal's In-mold Technology. This sees a lightweight but tough outer shell fused with the inner EPS liner. It's this combination that offers protection from both minor bumps as well as energy-dispersion of more serious head impacts. The In-Mould design also allows O'Neal to create a lightweight helmet with large vents, without compromising safety. When you're in the flow of your mountain bike ride, this will keep you feeling cooler and fresher.  Easy AdjustmentO'Neal's size adjustment system lets you get the perfect fit. A micro-adjustable dial to the back gives one-handed operation, even on the fly. You also benefit from the quick-release buckle, making it super quick and easy to fasten and release at the start and end of a ride. FeaturesLightweight In-mold Technology fuses the inner EPS and shell together: more durable and ventilated plus increased protection and energy dispersionMultiple air vents for optimal ventilation and coolingQuick release buckle for easy single-handed fastening and releaseRetention system for perfect individual fit and easy one-hand adjustmentWeight: 300 - 350g (±25g)Exceeds EN1078 safety standard for bicycle HelmetsBuy O'Neal Protection from Chain Reaction, the World's Favourite Bike Store.