Main Features:<br />• Unscrew the screws on surface to make the helmet with air vents， as you see in picture<br />• With 13 air vents<br />• Glasses slot design， more convenient for myopes and cyclist <br />• Head circumference: 58 - 62cm<br /><br />    Specifications<br />General<br />	 Brand: GUB                                                  <br />                        Suitable for: Cross-Country Cycling，Electric Bicycle，Fixed Gear Bicycle，Mountain Bicycle，Road Bike，Touring Bicycle                                                  <br />                        Color: Black，Orange，Red，Yellow                                                	<br />Specification<br />	 Product weight: 0.385KG                                                  <br />                        Packge Weight: 0.821 KG                                                  <br />                        Product Dimension: 29.00 x 21.00 x 18.00 cm / 11.42 x 8.27 x 7.09 inches                                                	<br />Package Contents<br />	 Package Contents: 1 x GUB-TT Bicycle Helmet                                                 	<br /><br /><br /><br />                                            <br /><br /><br /><br /><br /><br /><br />                                                <br />