Alpini Bivy Sack

The Alpine Bivy Sack from Brooks Range Mountaineering is a great sleeping system that can be used with a lightweight tarp or as a stand alone shelter. Designed to be lightweight and durable, the Alpine Bivy features two different fabrics. The top of the sack is made out of a highly breathable waterproof 15D nylon with 20,000 20,000 rating, the bottom is a durable waterproof breathable 40D nylon with a 10,000 10,000 rating. To increase the users comfort Brooks Range added a zip open panel of No See Um netting across the users face.The Alpini Bivy Sack will work with any size Brooks Range sleeping bag and is also big enough for a lightweight air mattress to be used inside the bag.