The SugarWrap Eco Freezer Bags Large protect food from freezer burn whilst maintaining freshness and taste. Made with Natural Sugarcane BIO-PE renewable material, these thick, durable bags offer the same functional durability as regular petro-based plastics whilst being completely sustainable. Ideal for freezing fruit, vegetables, meat, poultry, fish, baked goods, cooked food and leftovers. Microwaveable (when defrosting and reheating, keep slightly open to vent). USDA Certified biobased and packaged in cardboard.