This item is cheaply made BUT I love them! Don't wear them too tight. It will get stuck and tear. The black cover on the bottom is too thin, not durable. I have another set in black so I was confident I wouldn't make the same mistake again.
Pros
The crystal valve cover is made of sparkling rhinestones and alloy coated with polymer clay, and the anti-corrosion coating can effectively protect the valve from dust/snow/rain, thus prolonging the tire life. Give your car a unique luxury look.