I don't know when, life has the same importance with me, she supports my faith and my dream, and has the same hobby of a group of steel engines, yes. We all love motorcycles because they symbolize independence, freedom, courage and perseverance. Guys, I'm ready. How about you! Ready to start!Helmet information:Name: Bluetooth Motorcycle Helmet Integrated Modular Flip up Full Face Motocross Helmet for Men Women Dual Visor DOT/ECE Approved Long Standby/3000 Mah Motorbike Crash Helmet with Bluetooth 4.0Bluetooth headset: Built-in battery, battery life of 88 hours, standby time of 30 days, waterproof, noise reduction, stereo sound, good sound quality, high-definition microphone, automatic answering of calls, fast chargingApplicable head circumference: L:59-60cm, 23.2-23.6 inches,XL:61-62cm, 24-24.4 inches,XXL:63-64cm(24.8-25.2inches)ABS helmet body, high impact resistance, heat resistance, low temperature resistanceHigh-density EPS buffer layer and comfortable lining, shock absorption and impact resistance.US: DOT certification, EU: ECE 22.05 certification standardAerodynamic ventilation system,Comfortable inner lining, removable liningDouble lens, sun-shading and sun-proof outer lens, anti-glare inner lens.Fast buckle, safe, firm and reliableApplicable people: adults, teenagers, boys, girls,men,womenApplicable season: all seasonsPACKING LIST:1 *Motorcycle Bluetooth Flip up Modular Full Face Helmet1*Motorcycle Ridding gloves1* USB Cable1*User ManualMEASURING TIPS:Special Note: For an accurate head measurement, wrap a soft (tailor) measuring tape horizontally around your head about 1" above your eyebrows.