This document provides guidelines for footwear sellers to reduce shipping costs by optimizing primary packaging dimensions. Sellers will be charged shipping fees based on volumetric weight or actual weight, whichever is higher. The document recommends reducing packaging dimensions like length, breadth and height to lower the volumetric weight and thereby reduce shipping rates. It provides examples of current and recommended packaging for different footwear types and the potential shipping cost savings from using smaller optimized packaging. Recommendations include using corrugated boxes, bubble wraps, polythene wraps and adjustable cartons to better fit products and reduce volumetric weight for lower shipping fees.