The shockcorded poles (which stay together instead of being in pieces) and two pole design make set-up quick and easy. Ventilation is provided by the two vents, two windows and areas of mesh on the Tetragon 9. The brimmed rear window and door make it so you can get air moving even in the rain. Eureka's characteristic StormShield fly, as well as the bathtub floor (which raises the floor's seams above the ground to keep water from coming in) offer protection from the elements. All the tents in the Tetragon series have the same features, their size being the main difference between them.