The bag is made of PLA+PBAT, 100% biodegradable and eco friendly. Different colors like black, green, red and other colors can be customized. It is used for business e-commerce to send out and return the products. Using this bags can protect your products during the shipment process. The tape on the bag is tamperproof and permanent. The bag is strong and opaque. It can not see through can keep the clients’s secret.