The Helium UL Bivy blends bluesignA(R) approved PertexA(R) Shield NetPlusA(R) fabric, a waterproof PU-coated floor, and fully seam-taped construction to deliver ultralight, breathable protection for minimalist backpackers, climbers, and fast-packers. Waterproof Protection Without the Weight The Helium UL Bivy is built for ultralight backpackers, climbers, and fast-packers who need waterproof protection and breathability in a minimalist shelter. Made with bluesignA(R) approved PertexA(R) Shield NetPlusA(R) fabric from 100% recycled nylon, the Helium UL Bivy is newly updated for 2026 to deliver durable, lightweight performance with a fully seam-taped design and waterproof PU-coated floor for reliable weather protection. Dual passive ventilation flaps improve airflow and reduce condensation, while a high-volume toe box adds comfort through the night. A clamshell opening, single DAC aluminum pole, and six stakes/stake loops make setup quick and efficient in any terrain. Fabric 2.5L Pertex Shield Netpluswith Hydrophilic laminate 100% Recycled Nylon 30D ripstop 100% Nylon 40D ripstop with PU coated floor Weight 18.02 oz/ 511 g Fabric Performance: Fully Seam Taped Highly Breathable Lightweight No-See-Um Mesh Waterproof Design Features: 2026 Updated Design Clamshell Opening Dual Passive Ventilation Flaps increases airflow and reduces condensation Four Aluminum Stakes High Volume Toe Box One Guy Line Loop Reflective Logo and Trims Single DAC Aluminum pole design Six Stake Loops