Oneal Matrix Split Bike Helmet Oneal is one of the pioneers and innovators in MX and MTB clothing. Striving for the best equipment tailored to the rider's needs and the desire for higher characteristics were those motives which prompted Oneal to find this company. Product development is a central aspect of Oneal's philosophy. Features: Two case sizes for optimal fit. Inmould technology combines inner polystyrene foam and outer shell forming a very light and stable housing structure: durable and well ventilated. as increased protection due to optimal energy distribution. Numerous ventilation openings for optimal ventilation and cooling. Quick release clasp for safe and easy closing and opening. Perfect fit thanks to comfortable padding and size adjustment system with adjustment wheel. Specifications: Weight: 290g ( /- 25g) Exceeds EN1078 and CPSC safety standards for bicycle helmets. Contents: 1 Oneal Matrix Split bicycle helmet.