Yongjiu Bicycle Riding Helmet for Men And Women, One-Piece Molding Breathable Mountain And Road Bike Safety Helmet, Dark Gree

Lightweight integrated molding design for no burden when worn

Front and rear airflow channels with low wind resistance for cooling and breathability

Mouth-shaped front air vents, deep internal ventilation grooves, streamlined top vents, and vertical rear exhaust vents to enhance air circulation and keep the head cool and breathable

Multi-layer protection with high-strength PC outer shell for impact resistance and durability

Adjustable head circumference dial for comfortable fit (turn left to enlarge, right to reduce)

Adjustable nylon buckle straps with sweat-absorbing chin pad