**Product Specifications:**

**Brand:** YEMA

**Model:** 367S

**Type:** Half Helmet

**Size:** 31cm (L) x 24cm (W) x 23cm (H)

**Weight:** Approximately 770g (with long lens)

**Head Circumference:** One size fits all (up to 63cm)

**Material:** Upgraded 709ABS shell, thick EPS cushioning

**Features:**

- Ventilation: Front and rear airflow, dual vent design

- Protection: High hardness shell, impact-resistant

- Sun Protection: Anti-glare visor for sun and bright light

- Multi-layer Protection: High hardness shell, multi-layer cushioning

- Compatibility: Suitable for wearing glasses

- Reflective: Reflective patches for night riding safety

**Color Options:** Khaki/Black/Tea, Grey/Black/Tea, Cherry Pink/Black/Tea, Jet Black/Tea

**Lens Installation:** Clockwise to install, counterclockwise to remove

**Maintenance:**

- Helmet: Clean with damp cloth, wax for shine

- Lens: Rinse with water, wipe dry with cloth

- Inner Lining: Wash weekly, especially in summer

**FAQs:**

- Size Adjustment: Interior padding can be adjusted for better fit

- Odor: New helmets may have slight odor, ventilate to dissipate

- Scratches: Minor scratches due to transportation, not a quality issue

Please note that the above specifications are based on the provided information for YEMA helmets designed for safe cycling according to the new national standards.