The best of sleeping under the stars and being in a shelter. The bottom and sides are made of of 30D sil-nylon that is waterproof. The top is made of 15D breathable water resistant fabric. There is an option to add a bug net hood over the face with a separate zipper. The bivy sack comes with a stuff sack and together they weigh 6.6 ounces, or 7.6 with the optional bug net hood. If there is a threat of protracted rain I'll set up a DIY tarp to protect me and my pack, otherwise in good weather I use… Full review
Titanium Goat manufactures backpacking equipment and accessories.