Dee Zee Tool Box - Topsider provides handy storage on top of your truck's bed rail. Constructed of durable Brite-Tread aluminum. Texture Black powder coat, provides a matte black finish while it protects and prevents oxidation. Door is held up out of the way with two shocks to give you easy access to reach what you need. Locking stainless steel T-handle latch. C-Channel design resists leaks, incorporating a one-piece neoprene rubber bulb seal.