No need to paint and scrape, these. Bumper Post Sleeves make old bollard posts look like new. Yellow high density polyethylene (HDPE) construction with UV inhibitors resist fading, rusting or cracking. Eliminates annual maintenance while helping to protect vehicles and the post from impact damage. Unique vertical ribs provide extra impact protection while allowing for easy slide-on installation. Sleeves can be trimmed for an exact fit.