【Product Certification】Motorcycle flip-up helmet meets DOT / ECE 22-06 requirements and complies with FMVSS 218 standards, ensuring the highest quality and best experience while maintaining the weight of the helmet. 【High Quality】Front flip-up motorcycle helmet is made of high quality lightweight ABS shell, shock-absorbing high-density EPS cushioning layer, which is strong, abrasion-resistant and unbreakable. 【Bluetooth + Microphone】Built-in Bluetooth CSR5.0 chip amplifier, stereo bass surround sound quality, auto-answer, song playback, built-in FM radio, call active noise reduction. Lithium polymer battery, continuous listening 20H, standby 80H. 【Built-in Dual Sunshade】Wide field of vision and clear sunshade. The external sun visor is strong and flexible, with high impact resistance; the internal sun visor provides extra protection for your eyes from the sun and can be easily controlled by a switch. 【Removable Liner】The elastic foam comfortably wraps around your head and provides enough support without putting too much pressure on your cheeks. The liner is fully removable and washable to keep the helmet clean and prevent sweat from contaminating the liner. Features Lightweight ABS shell with comfortable heavy-duty padding Rugged, highly resilient front visor with extreme impact resistance Streamlined aerodynamic design - reduces wind noise and drag Removable, washable liner for easy cleaning Fully adjustable vents to help keep riders cool and comfortable Equipped with a freely retractable sunshade inner mirror for intense sun exposure Product Specification Type: Full face helmet Outer shell material: high strength ABS + high density EPS Lining: skin-friendly, sweat-absorbent and breathable Product weight: 1600 grams Product certification: DOT/ECE certified Size M (55-56cm), L (57-58cm), XL (59-60cm), XXL (61-62cm) Package Includes 1 * Motorcycle helmet 1 * Bluetooth headset 1 * Motorcycle mask 1 * Motorcycle gloves Attention Manual measurement error range of 1-2 centimeters