I've been using one for a short time. ● Convenient clip-on bag clips for food in bags! ● Saves the trouble of using rubber bands or clips, and it's easy to use, just open and close the cap! ● Wide-mouth type is easy to use for large bags such as cereal and rice. ● S size is also available, convenient for storing powders. ■Specifications■ Not for use: microwave oven, dishwasher, dish dryer, freezer Heat resistance: 100℃ Cold resistance: -20℃