The compact and capacious Darwin 6x4 is very easy to assemble. It features 16mm double-wall panels for greater strength and rigidity. The structure is lockable for added security. Double doors make it easy to bring items in and out. The ceiling is high enough for an adult to comfortably move around inside. It includes ventilation to prevent odor build-up and a window for natural light. The floor panel protects against mud and rainwater.