The Brooks-Range Alpini serves as a super-light, one-person bivy bag, with or without a sleeping bag. Cut large enough to accommodate most standard length sleeping bags, the Alpini is constructed with an ultralight, waterproof/breathable ripstop nylon specially designed and fabricated for Brooks-Range. The floor of this lightweight shelter is completely waterproof, made of durable coated ripstop nylon. A short zip simplifies entry, along with a deep cowl-cover over the head and an elastic drawcord closure. Highly compressible, the Alpini packs to half the size of a one liter bottle.