Maximum Coverage MTB Helmet Redefining open-face mountain bike helmets, the Dropframe Pro Helmet has earned Virginia Tech’s best rating (5 STARS) in their Bicycle Helmet Ratings program with the best rating of any helmet they have ever tested. Superlight and extremely comfortable, it's the choice for trail riders seeking more coverage, more confidence, and more fun. This game-changing open-faced enduro helmet features MIPS, our dual-density Varizorb EPS liner, and increased coverage for the ears, jaw, and back of the head.