Late reply but have been using my 0°F 10oz apex new river quilt a lot more this winter. In calm, no wind, I've been toasty warm at 0°F. I find I need to ensure a snug, not tight fit, against the hammock body. So I use stretch cordage to pull up the quilt to eliminate any gaps. At that temperature I can dial it in and have a smile on my face. Nice!

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