360° ThermaQuilt 3-in-1 Blanket, Sleeping Bag & Hammock UnderquiltDont let cool weather keep you inside when you can turn your hammock into a warm, cozy cocoon with our versatile hammock underquilt and overquilt. The Grand Trunk 360 ThermaQuilt completely wraps around any hammock and cinches at the ends to keep the warm air in and cold air out. Or lay it flat to use as a tech blanket or traditional sleeping bag. Our underquilt works with almost any camping, outdoor or backyard hammock. Zip into warmth and stretch