These flaps are an awesome and a required addition for driving in wet or muddy conditions. I live on a dirt road, and these keep the car so much cleaner and protect the paint from chips. The instructions are ok to follow, but there is a you tube tutorial from CJ Pony Parts that helps a lot. The look great and are made of a flexible and durable rubber that won't crack.
Thought they were a bit expensive for what it is...but you're really paying for quality. The fit was perfect - real easy to install and they look amazing + protect your paint! 10/10 Will recommend.