Bottle up the warmth.
With insulation made from approximately 5 recycled plastic bottles. PrimaLoft® Insulation ThermoPlume® is a lightweight, down alternative that some pretty impressive properties. It’s actually blown in so it’s easily compactable, making the “packs-right-into-itself” factor a breeze. Plus, it’s guaranteed to stay warm and fluffy (not bulky) even when wet.