Outdoor Research Helium UL Vestibule Lightweight Bivy Shelter Extension use_finger-training with approximately 6% less internal

with approximately 6% less internal volume than the standard Defy Lace

Strong and precise

not for use inside climbing shoes

Progress gradually to avoid overload

Three Styles to Choose From

Outdoor Research Helium UL Vestibule Lightweight Bivy Shelter Extension use_finger-training with approximately 6% less internalOutdoor Research Helium UL Vestibule Expand Your Shelter Without Adding Bulk The Helium UL Vestibule is a lightweight add on designed to pair seamlessly with the Helium UL Bivy, creating additional protected space for gear storage, cooking, and shelter from the elements during fast and light adventures. Built from lightweight silicone coated ripstop nylon, it adds valuable weather protection with minimal impact on pack weight or packed size. The