Shop a wide selection of Bivy Sacks at The House Boardshop! Traditionally called bivouac sacks, Bivy Sacks were made for the extra protection and convenience adventurous mountain climbers, hikers and travelers need. Designed to protect gear and sleeping bags with waterproof fabric that doesn’t restrict breathability, Bivy Sacks are perfect for shielding against the elements and providing extra insulation. Order your new Bivy Sacks from us today and we’ll immediately ship out within 24 hours, Monday-Friday!