This cotton door curtain is designed specifically for cold seasons and entrances and exits that require cleanliness, dust prevention, and sound insulation. Using high-density 600D Oxford fabric, it has excellent wear resistance, tear resistance, and waterproof performance. The interior is filled with high weight environmentally friendly cotton, forming a reliable physical insulation layer. The classic split design not only facilitates the passage of personnel and small carts, but also achieves seamless fit in the middle when closed, forming a complete seal. The steady gray tone is not only resistant to dirt, but also able to coordinate and match with various industrial and home environments. Whether used for door partitions in production workshops, wind and dust prevention in warehouses, or winter insulation in home garages and basement passages, it can effectively block the intrusion of cold air, reduce indoor heat loss, and also has multiple functions such as insect prevention, sound insulation, and privacy protection. The edge reinforced sewing and durable hanging on the top ensure long-lasting durability, making it a classic practical solution to address environmental issues at the entrance.