Outdoor Research Helium UL Bivy accessories 28mm heel / 24mm forefoot

28mm heel / 24mm forefoot stack with 4mm drop — enough cushion for long efforts without losing ground feel

and quick-drying

Canyon Distortion

Built for post-activity recovery

or rough Southern campsites where ground damage adds up fast

Outdoor Research Helium UL Bivy accessories 28mm heel / 24mm forefootWhen weight and pack size matter more than anything else, the Helium UL Bivy is our pick for solo thru hikers, alpine climbers, and bikepackers who need real weather protection without the bulk. Pertex Shield Diamond Fuse fabric keeps out rain and wind while breathing well enough to cut down on condensation. A zippered mesh panel and clamshell opening round it out for bug free nights and easy in and out. Pertex Shield Diamond Fuse fabric delivers