Bell: BUILT TO SEND IT! Built on our legendary Full-9 platform, the Full-9 Fusion is our no-compromise full-face helmet for riders who hold nothing back.With a premium fiberglass shell, a wide field of view, Overbrow Ventilation intakes, a plush interior, and MIPS technology, this helmet delivers world-class quality, fit and features.It doesn’t matter if you are chasing the clock on a downhill run, or sending big gaps at your favorite bike park, if you are a rider who loves to shuttle to the top and then shred all the way down, this helmet is built for you.  FEATURES- MIPS (Multi-Directional Impact Protection System) - A leading slip plane technology designed to reduce rotational forces that can result from certain impacts- X-Static padding: Quick-drying materials, woven with real silver fibers, inhibit growth of odor-causing bacteria and fungi- Overbrow Ventilation features intake ports on the brow of the helmet to usher in cool air and push it through the air-channel matrix for full-head ventilation- Fiberglass shell- Flying Bridge visor: Originally developed for moto use, this visor's side-mounted screws are easy to adjust, even while wearing gloves- Breakaway screws- Integrated breakaway camera mount requiring no zip ties or tape, designed to break away upon impact to reduce the risk of injuryCERTIFICATIONS- CPSC Bicycle- ASTM F1952-00 (Downhill)- ASTM F2032-06 (BMX)SIZES- XS 51–53 cm- S 53–55 cm- M 55–57 cm- L 57–59 cm- XL 59–61 cm- XXL 61–63 cmVENTILATION- 10 helmet vents, 3 brow portsWEIGHT- 1080 grams (size M)