body,td,th { font-family: Arial, Helvetica, sans-serif; font-size: 12px;}The Brentwood is Bern"s most popular bike helmet for men, featuring a removable visor (patent #US D572880 S), sunglass channels for fitting your shades and airflow channels to keep you cool. Urban messengers like Kevin "Squid" Bolger and Carlos Ramirez love the versatility of this lid. "The (Brentwood) is so light and low volume, and yo", I can rock it all winter with the liner and be warm." Squid Bolger, messenger icon, Cyclehawk, NYC.Constructed with liquid injected Zipmold Foam. Complies with CPSC, ASTM F 2040 & EN1078 Safety Standards. Weight: 14.1 - 15.8 oz. Adjustable feature at back of helmet. Interchangeable visor feature. Winter upgrades are available but not included.