Summer backpacking and winter car camping in the desert call for Rab's lightweight and packable Ignition 4 Sleeping Bag. Its Pyrotec synthetic insulation provides a surprising amount of breathability for maintaining warmth on warm winter nights in the desert and brisk summer evenings in the mountains. Because its so breathable, Pyrotec makes the Ignition very packable for compact storage in backpacks. Rab designed the Ignition with a tapered mummy shape that gives more room up top compared to most mummies, and the angled footbox stays snug but still allows for some movement. The ripstop shell has a high strength to weight ratio, and the polyester lining is soft to the touch. This bag also features an internal draft collar and a drawcord at the hood for secure coverage.