**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.
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