Q1 How TO CARE Silicone Head Shield?1.Clean them in lukewarm water with mild soap, air-dry or with towel gently.2.Keep away from hot temperature, sunshine, sharp pointy things, washing machine, chemical material.3.To avoid discoloration of other clothes, do not clean the products with other clothes.4.This product is easy dyeing. Therefore, do not wear faded clothes or jewelry. Artificial dyeing is not refundable.Q2 How to judge the size is suitable for you?If you are not sure which size will fit you best, please send us message about your measurement as follow1. Your Head Circumference and Head Height2. Eye Width and Buttonhole Spacing3. Neck Circumference.We will recommend a suitable size for you after received above information from you.Q3 About Return Policy and after-sale service?We accept no reason return within 30 days and accept exchange size and color.