Billed as "the complete motorcycle anti-corrosion system," the CycleVault product appears to be focused on providing a complete waterproof enclosure for your machine, much like the CycleShell. There's no interior frame here, but the CycleVault is constructed of durable rip-stop polyethylene film impregnated with Zerust, a proprietary rust-resisting formulation. Once the motorcycle is placed into the Vault enclosure (there aren't any heat shields, so Cycle Vault recommends the bike be completely cool) the interior becomes saturated with Zerust vapor, which is said to form a corrosion-inhibiting layer that's invisible, odorless and non-toxic. When we doused the Vault with a steady stream of H2O, we found no moisture had penetrated to the bike (but there are no air vents either). When your motorcycle is removed from the Vault, the Zerust will then, to use the company's words, "revolitize into the atmosphere," thus leaving your vehicle clean, dry and ready for immediate use. A thick, durable built-in base can be set on most solid surfaces, and a sewn-in fleece lining is optional and sizing is specific to your bike model. A storage case is included. Go to www.cyclevault.com for more info.