For a 5kg capacity, the most common and cost-effective material is BOPP Laminated PP Woven Bags, which offer excellent tensile strength and moisture resistance. For premium retail branding, PE/PA (Polyethylene/Polyamide) vacuum pouches or multi-layer laminated plastic (PET/PE) are preferred to provide a high oxygen barrier and a glossy finish. If sustainability is a priority, non-woven fabrics or kraft paper with a food-grade liner are viable alternatives, though they require reinforced stitching for the 5kg weight.