Windshield Wiper Protectors

Original by Ildar Sagdejev
licensed under CC BY-SA 3.0,
via Wikimedia Commons

Apparently, some windshield wipers have plastic protection on the blades. Not to protect them between use (that would be awkward and dangerous), but to keep them safe while they are sitting in the plastic containers on the shelf in the stores. Of course, I found this out after traveling a thousand miles with them on. (I did not take them off between storms.)

I have changed windshield wiper blades many times. On man...