These travel vacuum bags are available in 5 sizes: 3 extra large, 3 large, 3 medium, 3 small and 3 travel roll bags. It is very suitable for compressed down quilts, cotton quilts, pillows, blankets, coats, T-shirts, dresses, etc. Note: There are three small vacuum bags without valves! Usage method: First, open the vacuum bag and put in the clothes and other items that need to be stored. Second, use the clip attached to the bag to hold the sealing strip. Third, rotate the valve port counterclockwise to open the valve port cover, and use the vacuum pump to extract the air inside the bag. Fourth, after extracting the air, rotate the valve port cover clockwise back.