Tomshoo unisex adjustable cycling helmet with ventilation systems Tomshoo unisex cycling helmet with adjustable size from 50 to 60 cm. The helmet has buckles for quick attachment and release. Circumference and tightness can be adjusted using the rotary wheel. The helmet has sliders on the adjustment straps for a better fit on the head. Thanks to the ventilation systems, air flows to your head, they ensure perfect air circulation and so your head does not sweat as much. Durable, light and strong material is able to minimize the risk of head injury in the event of a collision. Material: EPS