I've written a review on this product last year. Temperatures dropped to 18°F last night , with zero wind. I had a very thin 100% polyester base layer(top and bottom) with a 250 100% merino wool layer over it(top and bottom), merino socks, and a pair of light shorts, and a beanie....there were a few cold spots in the hammock but overall I was able to get warm enough to sleep....WHEN ARE YOU GONNA MAKE A 0 DEGREE VERSION??,!!! ( I need it for my appalachian trail thru hike in 2026)