I have had a number of raincoats and have been frustrated that they only seem to work in situations where there is only light rain. They all had high tech fabrics and had the ability to breath.  In a real downpour they seldom seemed effective. They seemed to get saturated as they aged, and left you damp. I know you can treat them to enhance their water resistance, but I never seem to get around to it.  The Carhartt Pvc rain coat has been a great find.  When you have to walk the dogs and it is pouring outside you stay totally dry.  This coat is heavy and durable.  The water just rolls off it. The price is very reasonable.  It too has some draw backs.  If you intend to be working or exercising this coat will feel like a sauna suit.  It is definitely going to be difficult to tolerate in extreme heat, even if you are not engaged in a vigorous activity.  If you were fishing or in a duck blind or out for a casual stroll this is going to be just the ticket.  So before buying consider your needs or you may be disappointed.