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Amazon.com : Go Time Gear Life Emergency Bivy Sack - Thermal Survival Tent and Sleeping Bag Bivvy for Blanket, Shelter & Camping Use - Pack of 1 with Whistle - Green : Sports & Outdoors
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Wild Peak Emergency Waterproof Bivy Sack Sleeping Bag with Survival Gear Whistle - Ultra Lightweight, Compact Thermal Mylar Blanket, Reflective, Reusable, Durable Bivvy - Walmart.com
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Amazon.com : AquaQuest Pharaoh Bivy Sack, Waterproof Outer Shell for Sleeping Bag, Minimalist Stealth Shelter, Olive Drab : Sports & Outdoors
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