The downside is that when we use it to waste time, lose sight lose money unnecessarily. Because glasses is expensive So we should think about the need to take before you buy.
The disadvantage is that when we take the time to really lose sight of money than necessary, because sunglasses are expensive items. Therefore, we should think, regardless of the need to use before buying.
Cons: When we use too much, it will be time consuming. lose sight than necessary because glasses are expensive, so we should think of the need to use before you buy