FUNCTION: This Sun Visor Glasses Holders enable to clip 2 pairs of sunglasses and an extra card. Keep your glasses away from dropping, scratching, missing, make it safer. NO EFFECT TO VIEW: Securely attaches to the sun visor, do not obstruct driver's view. FLEXIBLE: It can rotate 180-degree which allows you adjust the glasses vertically or horizontally. COMPATIBILITY: Fits all glasses and sunglasses, especially thicker ones. NO HARM TO GLASSES AND SUN VISOR: Soft material does no harm to arms of glasses & sunglasses. The clip is flat and a little bit wide, No marks left for sun visor.