The Sierra Designs Zagori Bivy is a 1-Person, Ultralight Bivy that has been updated in both materials and styling. The Zagori now offers a pre-bent aluminum pole for comfortable sleeping. Waterproof-breathable Drizone laughs off the worst weather and welded seams endure season after season of use, just what climbers and fastpackers need. Sierra Designs 100% nylon Drizone waterproof/breathable fabric does a suburb job of sealing out wind, rain, and snow while venting internal moisture, helping you stay dry, comfortable and protected in any type of weather. Sierra Designs selects 2-layer, 2.5-layer and 3-layer Drizone fabrics for different equipment pieces to provide the best blend of weather protection and moisture management for any activity.