The Outdoor Research Helium UL Bivy is an ultralight, waterproof one-person shelter for minimalist backpackers, climbers and fast-packers. It pairs breathable Pertex Shield NetPlus fabric made from recycled nylon with a waterproof PU-coated floor and fully seam-taped construction. Features: Fully seam-taped, waterproof and highly breathable construction Clamshell opening with no-see-um mesh Dual passive ventilation flaps increase airflow and reduce condensation Single DAC aluminum pole adds headspace without bulk High-volume toe box for comfort and sleeping bag loft Six stake loops and one guy line loop; four aluminum stakes included Reflective logo and trims Specifications: Product number: 322699 Fabric: 2.5-layer Pertex Shield NetPlus with hydrophilic laminate, 100% recycled nylon 30D ripstop Floor: 100% nylon 40D ripstop with PU coating Weight: 18.02 oz / 511 g Dimensions: 82 x 26 x 19 in (foot box tapers) Seasonality: 3-season