Not meant for wire arms. Thinshadeez Visors attach to your sunglasses rather than with a strap or clamp around your head. This means no headache and no hat hair. 2 sizes depending upon the width of the arms on your glasses. Slip the elastic loops on the arms of your glasses, Turn the knobs to tighten the elastic if needed and you have a visor that won't blow off and protects your eyes from the light and glare coming in over the top of your glasses.ThinShadeez are great for people with light sensitivity, photophobia, sensitivity to glare, those that get headaches easily using regular visors. You won't even feel this visor on your head! While making No Claims that this will prevent viruses from getting in your eyes, any protection from sneezes or coughs coming in over the top of your glasses has to be good right? These are not full-face visors Visors work better if they don't have thin wire arms.