Black Diamond, Black Diamond Big Wall Bivy Bag Long All Lightweight Shelters >>> Lightweight Shelters by Black Diamond More details and ordering info. The Black Diamond Big Wall Bivy has been a favorite for alpine and big wall climbers throughout the world. This minimalist shelter is designed for harsh environments and technical climbs. The wire reinforcement in the hood cuts down on claustrophobia while the ToddTex keeps you nice and dry. Climbers love the Big Wall Bivy for its full strength tie in point which allows you to stay clipped in and sealed off at the same time. Product Features Material: ToddTex Seam sealed: Completely seam taped Number of doors: 1(if you call the slit in a bivy a door) Bathtub floor: Yes Ventilation: Mesh panel Product Dimensions: 2.6 pounds User input on Black Diamond Big Wall Bivy Bag Long by Black Diamond: Be the first to submit input on this product Submit Input: Your Name: Write or Paste Input here: Upload picture:      Review Guidelines