Jungle Boys : Hippy Crasher (4x5in) Packaging 3.5 Mylar Bag Items are Non-Refundable and Non-Exchangeable. Jungle Boys : Hippy Crasher (4x5in) Packaging 3.5 Mylar Bag In its basic form, Mylar® is a clear material made from polyester resin. The silver effect comes from a lamination to foil or a metalized ...