Uses: Convenience meals, takeaway meals. Material: Polypropylene. Temp Range: Able to be microwaved, but will become brittle if frozen. Shape Retention: Ideal. Grease & Oil Resistance: Above average. Heat & Loss: Minimal. Safety: Cost effective solution for transportation of takeaway meals. Lidding Options: All containers have a compatible lid available. Environmental: Able to be recycled at most collection deposits in NZ.