Used Generation 1 Kifaru Woobie. This item has served me well during numerous field problems, very warm! The Kifaru Woobie is MUCH warmer than a standard poncho liner. Climashield insulation is continuous filament - so strong that no quilting is needed. Plus, it has a better "feel" and draping capabilities - no quilting, so there are no cold spots. Coupled with the water resistant RhinoSkin Shell, you get immediate warmth and protection. Stuff sack is built-in. Item sold as-is, no returns.