Using your Starvos WaveCel Bike Helmet is easy. First, adjust the straps to fit snugly under your chin. Make sure the helmet sits level on your head and covers the top part. When riding, always keep the helmet fastened. As for maintenance, you can use a mild soap and water to clean the outer shell and the interior padding. Just gently wipe them down and let them air - dry. Don't use harsh chemicals or abrasive materials as they might damage the helmet. Also, check the helmet regularly for any signs of cracks or wear. If you're in an accident, replace the helmet immediately, even if there's no visible damage. This will ensure you always have reliable protection while cycling.