The small bag size is 15cm×20cm, lightweight and portable, suitable for carrying a small amount of snacks, accessories, or cosmetic samples; the medium bag size is 25cm×35cm, suitable for placing clothes, stationery, small toys, and other items; the large bag size reaches 35cm×50cm, capable of easily accommodating larger items such as shoes, pillows, blankets, etc. Whether for household storage or commercial packaging, you can find a suitable size. This hand-carrying self-sealing bag is made of high-quality polyethylene (PE) material, durable and resistant to breaking. The unique self-sealing design allows for a tight seal with a simple press, effectively preventing moisture, dust, and insects, providing reliable protection for your items. The handle part of the bag has been specially reinforced, sturdy and strong, with high load-bearing capacity, making it convenient for you to carry, even when fully loaded, it is not prone to breaking. At the same time, its high transparency allows you to see the contents of the bag at a glance, making it easy for you to quickly find what you need.