KATABATIC GEAR Bristlecone BivyKATABATIC GEAR Bristlecone Bivy this ultralight bivy presents another quality product from Katabatic. Waterproof floor with a water resistant upper to protect your quilt from spray and mist. Featuring a large mesh panel across the top of the bivy and long U shaped zipper extending from waist level across the top, allowing for easy entry and exit. The #3 YKK zipper is easy to use, and the dual zippers do not snag. All the seams and stitching are neat