Applicable hair: wet and dry Thermal conductor materials: environmentally friendly alloy Thermal conductor diameter: 16MM-20MM Temperature Command adjustment: 3 sections There's an ordinary size for football helmets but when purchasing one you'll only ought to maintain your head size in your mind. Each individual brand name has distinct dimension parameters https://riddellspeedflexadultlarg73593.bloggactif.com/31684761/helping-the-others-realize-the-advantages-of-riddell-speedflex-adult-large