Foldable insulation systems may comprise recyclable materials fabricated for ease of insertion into a typical box. Disclosed embodiments include the use of polyester fill encased or covered with a clear membrane or other surface material. Disclosed embodiments eschew the current trend of using biodegradable materials. The use of biodegradable materials represents a new found shortfall in the art as few useful insulation materials are biodegradable within a reasonable period of time. The disclosed insulation systems overcome shortfalls in the art by using polyester type materials that often achieve a number “1” value for recycling. Disclosed embodiments may be comprised of virgin resin or more common material such as recycled bottles and other recycled polymers, polyesters, polypropylenes and similar materials. Disclosed systems include a relatively flat insulation member that may be disposed or attached to the top of a box or other container.