High quality Pop Top containers by Emerald Mountain Supplier are high quality containers that are tightly sealed and will not leak. They are the perfect amount of tension and will not open by accident but will still open with one hand. Every time you squeeze the container it makes a clear and loud POP noise that defines these containers. Custom molded so that they are strong and can be reused over and over. These are tested and sure to be the perfect container for all of your storage and sales needs.