[DURABLE NYLON AND LIGHTWEIGHT] This hammock underquilt shell and lining fabric are both 20D 400T ultralight nylon fabric. The fabric weight is 1.1oz. Fabrics and fillers are ultra-light materials with a total weight of only 2.1 LBS.
[DUPONT WARM QUILT] Bio-Based Fiber Sustans Made with Dupont Sorona. Sustans is the world's first high-tech insulation material for winter clothes. More environmentally friendly. Sustans fluffy, high warmth, high elasticity, soft hand feel and more convenient and flexible to use it. Applicable environment: 50-59 degrees Fahrenheit.
[KEEP WARM AND MULTIPLE SEASON] No Cold Butt Syndrome (CBS) on the under quilt.There are shock cords on each end of the underquilt that tighten the middle part of the underquilt. This reduces sag in the end dams, eliminating cold spots under the legs and shoulders. In cold weather, you can cinch the shock cords at both ends to help keep in warmth, and when the weather gets warmer, you can loosen the shock cords for cooling ventilation.
[2 IN 1 DESIGN AND 4-SEASON HAMMOCK QUILT ] By adding our blanket(B07YJX4Y9P) to this 3 season hammock quilt, you will get a 2-layer winter underquilt that is good to 20 -40 degrees Fahrenheit ( https://www.amazon.com/dp/B07YJX4Y9P?ref=myi_title_dp ) So this is the right hammock underquilt for all seasons.
[QUICK SETUP AND SYNTHETIC INSULATION] Quick setup by fastening the two carabiners on each end of the hammock.Can Be Washed & It Dries Quickly Unlike Goose Down.Avoid allergy issues with goose/ duck down feather blankets.