Outdoor Designs, Alpine Bivi All Lightweight Shelters >>> Lightweight Shelters by Outdoor Designs More details and ordering info. The first commercially available bivy utilizing Air Perm GORE-TEX. Compact design combines small pack size with functionality.[Air Perm GORE-TEX fabric[Side wall baffle maximizes sleeping bag loft[Heavy duty 10 User input on Alpine Bivi by Outdoor Designs: Be the first to submit input on this product Submit Input: Your Name: Write or Paste Input here: Upload picture:      Review Guidelines