A rear wiper with a natural rubber blade is a type of windshield wiper that is designed to clean the rear window of a vehicle. The natural rubber material is a durable and flexible substance that is resistant to weathering and wear, which makes it an ideal choice for use on a wiper blade. A frameless wiper is one that does not have a metal or plastic frame around the edges of the blade. This type of wiper is typically more flexible and can conform more closely to the contours of the rear window, resulting in a better wiping performance.