Roll-N-Lock is a unique retractable cover that can be opened or closed in less that 3 seconds! Built with a vinyl covered aluminum construction. The compact housing and flush handle provide maximum storage space in your bed while the drainage fittings keep water from building up in the housing unit of your Roll-N-Lock. Another great option for you Roll-N-Lock is the cargo manager. An optional companion product for Roll-N-Lock , its a movable truck bed divider that can be positioned every 3″ along the length of the bed to manage and contain lightweight cargo.