This is my 3rd BAK Revolver X4S on my 3rd Ford F-250 8' Bed. After researching every other product on the market, I keep coming back to BAK. Their products are extremely well designed and install easily. Their product adds safety, security and beauty to your beloved truck!I was able to install it myself in about 45 minutes and it lined up and fit perfectly. No permanent holes needed for the Revolver X4S, and it can be removed later very easily and quickly (although I have never had a reason to remove it because it rolls up and is kept in place by straps that are provided.You do not lose any area in the bed because it rolls up on top. This is a huge benefit to people like me that use their trucks for work, constantly going into Home Depot or Lowe's and don't want to get ripped off. My prior experience is that they are not 100% water tight, however, they do keep your tools dry!One additional huge benefit is that you can install a Adarac ladder or sport rack without interfering with the operation of either.