Make tracks over frozen winter layers, follow rising stars through an early evening, pitch this roomy tunnel tent with confidence that it will stand through any weather the morning brings. The exoskeleton design allows the Sirius to be pitched rapidly, in one piece, with the rainfly covering the tent through the entire process. This feature makes it suitable for stormy areas where precipitation and howling winds can make pitching your tent a long and difficult task. A polyurethane-coated ripstop polyester rainfly repels moisture. Flat pole sleeves contribute to the low aerodynamic profile and minimize fluttering in stormy conditions. 9 mm DAC Featherlite aluminum poles stay rigid through most conditions and offer excellent rebound in extreme weather. The polyurethane-coated taffeta nylon floor remains waterproof through drenching storms and slushy spring conditions and the large circular door unzips in one smooth motion, providing enough room for two people to sit side by side. Adjustable vents at the front and rear of the tent allow airflow to be finely tuned to match the weather. A generously sized vestibule protects gear and provides a sheltered space for cooking when the weather outside is howling. The canopy can be unhooked from the poles and pushed back to create a spacious and protected area under the rainfly for sorting gear, cooking dinner, or stretching out during stormbound days. In addition, the rainfly can be erected as a lightweight shelter or the canopy can be pitched separately in warm weather, making the Sirius a 4-season tent that comfortably adapts to summer use.