You have never been so warm in a hammock before in your life, period. The elements are now a past time worry, no matter what time of year it is. The Spark turns your ENO hammock into a fortress, guaranteeing you'll stay warm and dry. A zipper free design and a convertible footbox keep you from struggling with your sleeping bag. The Vesta is a champion in the fight against brisk winter conditions.
The shell is constructed of 20D nylon Ripstop with water repellent finish. The lining is made of 30D nylon teffeta with water repellent finish. The insulation is made of Primaloft Silver Hi-Loft, rated for an effective temperature range of 35 - 45 degrees Fahrenheit (when paired with a comparable under quilt).