Here are four double-walled bottles. I bought them to store organic seasonings. I have some extras, so I'm selling them! Please feel free to use them. Please refer to the photos for product details. If you were looking for these, please consider this opportunity. These items have been handled by a person once, so please understand that they are used goods. Colors may appear slightly different from the actual product due to the shooting environment and the monitor you are viewing. * We will pack and ship compactly. ★ Please excuse any wrinkles due to storage or packaging. ★ We carefully check for stains and damage when listing, but there may be oversights. Please understand. Also, please refrain from purchasing if you are particularly sensitive to the condition. ★ If you have any questions, please feel free to ask. ★ Thank you for reading to the end! These are soft bottles that use a double-peel structure to reduce contact between the contents and the outside air, keeping them fresh. They look like ordinary soft bottles, but they have an air-bagless cap that prevents air from flowing back in, and a valve on the body that allows air to be pumped between the outer and inner bags. This structure allows the inner bag to peel away as it is used, reducing contact with the outside air without taking in air, and keeping the contents fresh. These are soft bottles based on the same concept as the double-walled, sealed bottles that are increasingly used for soy sauce to keep the flavor fresh. They are also recommended for preserving the freshness of homemade soy sauce, dressings, and cold brew coffee.