What Our Gearhead(R) Experts Are Saying:"This vestibule is a must-have for alpine climbs. It provides extra storage space for gear and a dry entry into the tent, making it incredibly practical in challenging conditions. The setup is quick and stable, even in tough weather."The Mountain Hardwear AC 2 Vestibule transforms your AC(TM) 2 Tent into a more versatile alpine shelter, offering additional gear storage and a dry entry for high-altitude ascents. Crafted with lightweight yet durable materials, the vestibule features a 40D ripstop nylon fabric with a weather-resistant Sil/PU coating to keep your gear protected in demanding environments. With ten attachment points, multiple reflective guy-out points, and DAC Featherlight(TM) NSL poles, this vestibule sets up quickly and provides a stable, spacious extension with ample headroom. A built-in vent enhances airflow to prevent condensation, making it a reliable addition for alpine climbing and mountaineering adventures.