Close bags of pretzels, chips, etc. While it weak j really had anything get stale using it. The magnet on the back falls off too easily. I may try it again due to the price.Less strong than typical chip clips I have purchased from the dollar store. Meh.Works as advertisedJust a waste of money. Some of the magnets were out of the clips. Magnets not strong enough to hold onto the fridge. End up on the ground. Waste of money.Magnets don’t stick to fridge at allWhile the product looks good, it is absolutely not effective at securing bags or even as a magnet. I am sorry I wasted my money.These are not very tight. They fall off of all our bags we use them on.I like a lot about these clips--they are easy to open for my arthritic hands, sized well for chips and similar sized bags, and none of the springs have broken yet--but the magnet on the back has fallen off about half. I liked sticking them on the frig for easy access. Now, they're in a drawer, sometimes buried. But, for their purpose of clipping bags, they're perfect.