From the MSR website
Engineered with superior space and ventilation, the Dragontail single-wall expedition tent excels where most other’s fail. Its hoop design creates cavernous interior spaces, while a sealable, overhead vent runs the length of the tent to allow the ventilation that’s critical to single-wall performance. Ultralight and seam-taped silnylon packs small, providing the weatherproof protection that alpine ascents, ski tours and minimalist, 4-season adventures demand.
* Super-strong: Proven hooped design stands strong in high winds and heavy snow.
* Livable: Roomy inside with excellent gear storage under large front vestibule.
* Superior Ventilation: Sealable, end-to-end overhead vent keeps condensation to a minimum.
* Fast Setup: Fast Feed™ pole sleeves and single-wall design make setup fast and easy.
* Lightweight: Weighs just 4 lbs. 6 oz. (1.99 kg)