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Best sleeping bag liner: Choose from silk and cotton travel sheets for extra warmth | The Independent
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Amazon.com : 0 Degree Wearable Sleeping Bag for Adults Compact Lightweight Cold Weather Mummy Sleeping Bags for 2-3 Season Camping Backpacking, Fits 5°F ~ 50°F, 4.3lbs More Warmer (Blue, Left) : Sports & Outdoors
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