Material selection is the most critical factor in determining the product's price point and durability. For high-end luxury markets, prioritize Genuine Leather or high-grade Vegan Leather (PU) with a thickness of at least 1.2mm to ensure structural integrity. For mass-market or promotional use, PVC, TPU, or Polyester (600D or higher) are preferred due to their waterproof properties and cost-effectiveness. If targeting eco-conscious consumers, look for suppliers offering RPET (Recycled Polyester) or Organic Cotton Canvas with GRS (Global Recycled Standard) certification.