The innovative Evolution Hammock integrates sleeping bag technology into a hammock-omitting a need for underquilts/overquilts. Get cozy in the Evolution Hammock! Features: Synthetic fill for a 20 degree rating Integrated baffled insulation under-quilt to keep out the cold! Weather-proof fabric for any adventure YKK Zipper Includes 2 lightweight aluminum carabiners Includes compression sack and storage sack Tech Specs: Material: 40D Nylon Diamond RS 290 WR Weight: 6.0 lbs Weight Capacity: 400 lbs Folded Dimensions: 20 x 9 x 9 inches Unfolded Dimensions: 126 x 66 inches