This blank polyester double drawstring backpack is a simple and practical multifunctional bag. Made of high quality polyester material, it is wear resistant, durable, and waterproof, ensuring long term reliability. The bag is designed with a double drawstring structure for quick opening and closing, and the shoulder strap length can be adjusted to suit different heights and needs. Its lightweight design makes it easy to carry, suitable for sports, fitness, travel, shopping, or daily use. The large internal space can easily accommodate books, clothes, sports equipment, and other items. The solid color appearance provides a wide creative space for personalized customization, allowing for printing or embroidery as needed to create a unique exclusive bag. Whether as a gift, promotional item,