Not only is this versatile box WATERPROOF but it's also RUSTPROOF with the addition of Flambeau's Zerust The WP3012 has 3 fixed compartments and adjustable dividers. Sporting a watertight O-Ring seal, secure locking latches, rigid design these boxes are ideal for storing water sensitive gear. Available in 8 sizes and variations you'll never need another utility box again. What is Zerust? A patented VCI polymer technology molded directly into specific Flambeau plastics that provides years of hassle-free, long-lasting rust and corrosion protection. How does Zerust work? Zerust-infused plastics emit an odourless, harmless vapour in a contained area to naturally form a protective layer around exposed, clean metal surfaces to prevent oxidation-reduction and stop rust and corrosion.