Hopkins Customizable Boot Tray has a unique design that allows the trays to connect together for straight run, or detachable for customizable use. The nestable 3-pc design and shelf tray merchandising save space that other boot trays dont. The raised ridges along the edges trap all liquids inside the tray and keep them off your carpets and flooring. Slots in the sides and bottom of each tray allow for easy customizable locking. The bottom of each tray has raised teeth to secure in place, providing holding power. Great for vehicles, homes, and garages.