For a soft roll-up bed cover that works alongside your existing toolbox, go with the Extang Express Roll-Up Toolbox Tonneau Cover. Its rugged vinyl tarp, Tuff seals and auto tensioning system block against moisture and sagging. Lifetime Warranty.
Clamp on strong Extang Cargo Cleats to most Extang tonneaus. Cleats are made of glass-filled polymer with zinc-plated bolts for extended life. Instructions include rope-tying and bed loading techniques. Sold in pairs and backed with Lifetime Warranty.