The POC Receptor BUG Adjustable is a great helmet for those people that have always wanted the Receptor Bug, but have never really fit into it. A dial on the back will insure that you are comfortable and safe. The double shell construction has vents that can be open and closed to regulate your temperature. Double Shell Construction also protects your head against sharp objects like sticks when you are charging through the trees. Adjustable Fit, Vented Double Shell System, EPS Liner, Detachable Ear Pads and Neck Roll, Goggle Clip, Certifications: EN 1077-B/ASTM 2040, Warranty: One Year, Race: No, Category: Half Shell, Audio: Not Compatible, Brim/Visor: No, Ventilation: Adjustable, Adjustability: Full, Year Round Capable: No, Shell Construction: In-Mold, Model Year: 2016, Product ID: 323523, Model Number: 10281 1508 XS/S, GTIN: 7332522660206