Kaytee CritterTrail Lazy Look-out Expand your pets living space to create the ultimate pet habitat with this functional accessory Dual purpose design makes a safe nesting area or a great look-out tower for your pet Removable twist-lock cover provides easy access and trouble free cleaning Features Super Protect Antimicrobial Technology to provide a healthier, cleaner accessory for your pet Universally connectable so it easily attaches to all CritterTrail, Habitrail, and S.A.M. systems Expand your pets living space to create the ultimate pet habitat with this functional accessory Dual purpose design makes a safe nesting area or a great look-out tower for your pet Removeable twist-lock cover provides easy access and trouble free cleaning Features Super Protect Antimocrobial Technology to provide a healthier, cleaner accessory for your pet Universally connectable so it easily attaches to all CritterTrail, Habitrail, and S.A.M. syatems