Plastic: Most common, typically transparent (e.g., polyethylene), various thicknesses (.75mil to 1.5mil) for durability.
Non-woven fabric: Sustainable option, lightweight, good breathability, comes in various GSM (grams per square meter) for thickness (60-120 GSM common).
Canvas: Durable, often used for heavier garments, not transparent.
Cotton: Breathable, natural material, not always water-resistant.
