Description: More streamlined hole design, fashion unique and beautiful, multiple ventilation forms a variety of styles, more comfortable, adjustable rotating internal regulator allows you to adjust the tightness of the head circumference flexibility to focus on safety, while wearing this section is easy to wear helmet, fashion comfortable cushion lining High double-sided product black velvet earthquake, increase earthquake effect Air vents take part of the heat by improving the internal helmet of the air flow, equipped with front brim front panel, colorful scientific. Gloss Material: EPS + PC Head Circumference: Approx. 21.26 inch 24.41 inch / 54 - 62 cm, Adjustable Color: Red Package Includes: 1 x Helmet Climbing