The Rab Survival Zone Bivi is a lightweight bivy for just-in-case situations. The Survival Zone is lightweight, coming in at 11 ounces, so you don't have to give it too much thought for your next ultralight adventure. The 50d Pertex Shield fabric is tough and waterproof, so you can slip your bag inside and jump right in after it. Sleeping under the stars is fantastic, but you never know when you might come across a little rain.
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