Bibler, Bibler Tents Hooped Bivy Sack Green, Reg All Lightweight Shelters >>> Lightweight Shelters by Bibler More details and ordering info. The Bibler Hooped Bivy Sack is a superlight, bivouac sack designed for climbers, bicyclists and other light weight fanatics. The hoop is a Delrin rod sewn into the sack, so there is nothing to set up and no parts to lose. Made of the same waterproof and breathable ToddTex laminate as used in all Bibler Tents, the hooped bivy sack collects less condensation than any other bivy bag sold in the U.S. All of the seams are factory seam taped. The floor is coated nylon taffeta, with a slightly tapered foot section for efficiency. Both the foot and head ends of the Bibler Hooped Bivy are 'boxed,' so they won't cramp your toes or compress sleeping bag loft. The double storm flap and rain gutter have no sewn seams, so they can't leak. The dual slider zipper in the Bibler Hooped Bivy opens in the middle for adjustable ventilation and the opening is also covered by zippered no-see-um mosquito netting. At 22 ounces, this durable, stormproof shelter is ideal insurance for that unplanned bivy. Measur Product Features Material: ToddTex. Totally waterproof, windproof and breathable Seam sealed: Completely seam taped Number of doors: 1 Bathtub floor: Yes Ventilation: Screen window opening Product Dimensions: 3.2 pounds User input on Bibler Tents Hooped Bivy Sack Green, Reg by Bibler: Be the first to submit input on this product Submit Input: Your Name: Write or Paste Input here: Upload picture:      Review Guidelines