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Rice bags are typically made of materials like polypropylene or woven plastic, which provide strength and durability, especially for large quantities. For smaller quantities, rice is often packaged in plastic or paper bags with resealable options to maintain freshness. Polypropylene bags are commonly laminated to make them waterproof, which keeps moisture out and ensures the rice remains dry. Bags can also include a transparent window, allowing consumers to see the grains inside without compromising quality.