When selecting Eco Bags, the material choice determines both environmental impact and durability. Common options include Non-woven Polypropylene (NWPP), which is cost-effective and recyclable; Organic Cotton or Canvas, valued for its high reusability and biodegradable properties; and R-PET (Recycled Polyethylene Terephthalate), made from recycled plastic bottles. Ensure the material weight is specified in GSM (Grams per Square Meter); for heavy-duty grocery bags, a minimum of 100-120 GSM is recommended to ensure a load capacity of at least 10-15kg.