Features Enter your model number to make sure this fits. Two doors: New rear door makes access twice as easy and increases ventilation Full Protection: steep roof, snow flaps and DuraSheild coatings help seal out the elements Easy Pitch: pitches quickly with included poles or with trekking poles for added efficiency Description Product Description With its minimalist design and extra interior space, the MSR Twin Sisters Shelter offers ample room for two plus gear without weighing down your pack. Pitch the Twin using the two included lightweight poles, or save even more weight by using your own trekking poles to support the twin-peak roof. A steep roof pitch sheds snow, and flaps at the base block out whipping winds and spindrift.