Helium UL Bivy

Fast-pack through rugged wilderness trails and maximize your backcountry efficiency with the ultra-minimalist protection of the Outdoor Research Helium UL Bivy, available at Grivet Outdoors. Engineered as the ultimate featherlight shelter for solo alpine climbers, thru-hikers, and bikepackers, this high-performance bivouac sack strips away every gram of unnecessary weight without sacrificing reliable weather protection. It is crafted from exceptionally durable, waterproof Pertex® Shield Diamond Fuse fabric that completely blocks out driving rain, heavy dew, and howling winds while maintaining excellent internal breathability. The streamlined profile fits easily into tight rocky ledges or dense forest clearings where traditional tents cannot go. Complete with a clamshell opening and a zippered mesh barrier to keep biting insects at bay, this compressible shelter packs down smaller than a water bottle, making it an essential addition to any fast-and-light packing kit.

• Pertex® Shield Diamond Fuse fabric offers industry-leading waterproof protection and exceptional abrasion resistance
• Fully taped seams block external moisture from seeping in during heavy, overnight downpours
• Highly breathable material layout maximizes interior airflow to significantly reduce condensation buildup
• Zippered mesh panel allows for ventilated, bug-free viewing of the night sky while keeping insects out
• Clamshell opening design provides straightforward entry, exit, and effortless sleeping pad placement
• Ultra-compressible structure packs down incredibly small to conserve critical space inside your backpack