… The Alpine Hammock is a lightweight sleeping shelter that works as both a camping hammock and bivy sack. It includes zippered no-see-um bug netting and a waterproof-breathable rain fly, which are both separate from the main hammock body. In this way, it can offer full protection from bugs, weather or both but still serve as a regular open-top hammock.
The market is already swelling with backpacking/camping hammocks from companies like Hennessey Hammocks, ENO and Exped.The Alpine Hammock is one of the few that double as a bivy sack, however. Essentially a waterproof ground sack designed to fit around your body and sleeping bag, the bivy sack is a type of streamlined shelter popular with climbers, mountaineers and backpackers because it offers full protection in a package that’s smaller and lighter than a tent. As in the hammock configuration, the Alpine bivy lets you zip in just the bug netting for better ventilation or batten down the rain fly to seal out water and wind.