Using your Tifosi Rail Cycling Sunglasses is easy. First, adjust the ear and nose pieces to fit your face comfortably. Put them on before you start your cycling adventure. When you're out, the sunglasses will protect your eyes from debris and glare, and the vented lenses will keep air flowing to prevent fogging. After use, clean the lenses with a soft, dry cloth. Avoid using abrasive materials that could scratch the lenses. Store the sunglasses in the provided case to protect them from damage. If the hydrophilic rubber parts get dirty, you can wash them gently with mild soap and water. Remember, these sunglasses are designed for cycling and other endurance sports, so enjoy the comfort and protection they offer during your active pursuits.