The PTX Bivybag II is a technical and waterproof two-person bivy sack designed for planned bivouac tours.

The PTX Bivybag II is made from waterproof ripstop nylon. The seams are fully welded for protection, and the breathable Powertex material on the top reduces condensation.

The hood can be secured to rocks or branches with practical cords. It comes with a signal whistle for emergencies.