Black Diamond Twilight Bivy Portable Power Devices This helps save energy over

This helps save energy over longer distances too

FlickLock® adjustability

The zinger features durable wire cord

and lightweight mid-layer

Custom-engineered aluminum hinges are overmolded into the tabletop for a lifetime of performance

Black Diamond Twilight Bivy Portable Power Devices This helps save energy overThe minimalist, four season Black Diamond Twilight Bivy is built from water resistant and breathable NanoShield fabric that keeps weight to an absolute minimum and packs down incredibly small, making it ideal for an emergency shelter or as a sleeping bag cover. Built with a zippered entry across the shoulders, its easy to get into and use while sitting up. Frameless construction to minimize weight Proprietary NanoShield single wall fabric Year round