Get all the performance of polystyrene loose fill chips in an environmentally-friendly way with EcoFlo Ultra. EcoFlo Ultra is a heavy-duty polystyrene alternative which includes natural polymers to increase its strength. These chips are perfect for use as void fill for heavier items, as the high strength of the chips can protect the item against outside damage, and provides cushioning and support during transit. EcoFlo Ultra is plastic free and compostable, yet retains similar performance to polystyrene - a win/win!