It is the same as you cleaning other sunglasses. It is easy to clean your coach sunglasses. Just wash the sunglasses with clean water and dry it with your sunglasses cleaning cloth. If your sunglasses still dirty, you can try to use some mild soap water to clean your coach sunglasses. Don't worry, it won't hurt your sunglasses. What you should remember is not wiping your sunglasses when they are dry. Besides, please don't clean your coach sunglasses with your T-shirt.
Well, to clean the coach sunglasses, you should follow some steps. For example, if the lens is merely dirty and not covered in abundant grease and grim, you can use a good quality linen or cotton cloth which will work wonders. Then, you can also use some resolution to clean it one more time. For the surface of the nose pad, you can also soak them for a couple of hours in warm water to loosen the residue. Then it will be easy to gently brush away the unwanted dirt with an old soft bristle brush or old toothbrush. Anyway, you should do the entire task in a gentle way so that you will not damage your sunglasses.
The way to clean the sunglasses is so easy that you just use the water to wash the lenses of sunglasses. Then use the clean cloth to dry it. In addition, you'd better prepare a sunglasses box to keep the sunglasses in it to protect from the dust or other dirty things.
If you want to take good care of your sunglasses, to know how to clean them is very important. When you clean them, you can flush them with warm water firstly. Then dry them by assorted eyeglass cloth or soft dry microfiber cloths. Be careful not to wipe lenses with your clothes. If your sunglasses are very dirty, you can wash them with a little eyeglass cleaner. It is also important that not to touch the lenses by your hands. When you don't wear them, you'd better keep them in their box and don't leave them lying on the table.