Design and FeaturesThe Nemo Pentalite is a five-sided pyramid-style shelter. It requires a minimum of five stakes (one at each corner) and no guylines to setup. Additional stakes and guylines (included) can be used to improve the stability and ventilation.The use of five sides – rather than the four used in conventional pyramid shelters – has allowed Nemo to add a couple of unique features to the design:The shelter can be pitched with the door completely open, effectively making it a three-sided tarp shelter. In pleasant weather, this gives great ventilation and views.When used in combination with the inner wedge, one of the corners of the shelter becomes a vestibule, while the remaining space turns into a rectangular shaped sleeping area.The shelter features an adjustable pole, which enables it to be pitched at varying heights for better ventilation or storm resistance. Three of the five sides have vents which can be guyed out to provide better air flow. Guying out the side vents also has the benefit of additional stability to the tent as well as additional volume by pulling out the sides.The Wedge, an optional accessory that is is INCLUDED, is another unique design element to this shelter. The Wedge is an insert that fastens into the shelter through a combination of zippers and Velcro, effectively adding full bug protection, a bathtub floor, and a vestibule space. What makes the Wedge unique is that it provides all of these features with minimum additional fabric. Other manufacturers typically design these inserts as a mesh pyramid with slightly smaller dimensions so that they fit neatly under the waterproof shelter. The Wedge fastens in by attaching to the interior of the shelter around the perimeter so that the mesh fabric is not required to go directly to the peak of the shelter all the way around. Another unique design element of the Wedge is that the center pole passes directly through the floor to prevent abrasion.