Bollard Covers Ask An Expert Request a Quote Request Service Or give us a call: 1-888-606-9415 Bollard covers are the simplest way to immediately improve the look and safety of your loading dock, warehouse and parking environments. These bollard sleeves fit securely over existing bollard posts and are built with thick polyethylene for durability and extended color life. Available in a large variety of colors, bollard covers have the dual function of increasing the aesthetics of your facility as well as its safety and function.