**Product Specifications:**

**Brand:** YEMA

**Category:** A

**Size:** Large size

**Standard:** New national standard 3C helmet

**Color:** White

**Features:** Lightweight, safe, protective, sun visor, anti-impact, adjustable, ventilated

**Certifications:** New national standard 3C, AAIIIDAFIIVA, IIE SAND

**Material:** Upgraded 709ABS, high hardness ABS shell, 30mm cushion layer, EPS buffer

**Lens:** Multiple color options, anti-glare, sun protection

**Additional Features:** Removable and washable lining, adjustable head circumference knob

**Safety:** Reflective stickers for night riding safety

**Ventilation:** Top and rear ventilation for airflow

**Weight:** Approximately 752g (with long lens)

**Head Circumference:** Up to 65cm

**Size Measurements:** Length 33cm, Width 24cm, Height 23cm

**Adjustment:** Multi-segment buckle for head circumference adjustment

**Color Options:** Khaki White, Titanium Grey, Blue, Ceramic White, Matte Black, Grey

**Lens Installation:** Clockwise for installation, counterclockwise for removal

**Maintenance:** Surface cleaning with car wax, lens cleaning with water and cloth, inner lining washing weekly

**FAQs:** Adjustment tips for inner lining, odor removal, minor scratches acceptance

Please note that the above specifications are in accordance with the new national standard 3C helmet requirements and YEMA brand guidelines.