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Mountain Hardwear Lamina? Z Spark Sleeping Bag

Mountain Hardwear says this about the Lamina? Z Spark:Unique Lamina? construction maximizes the loft of your insulation eliminates cold spots and thermally maps insulation to areas you need the most warmth. By strategically placing insulation we are able to concentrate warmth. It also features our exclusive welded Lamina? construction that maximizes loft and eliminates cold spots caused by traditional stitching.

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