ALPS Mountaineering Fleece Bag - $31.47

You can add a touch of extra insulation to your sleeping bag thanks to the soft Alps Mountaineering Fleece Bag. The rectangular shape fits inside mummy- or rectangle-shaped bags, and the polyester fleece provides warmth without adding a ton of bulk to your backpack. During the warmer summer months, you can use this bag alone rather than crawling into a heavier down sleeping bag. - $31.47

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