Advanced Materials: The contact lens cleaner is made of high-quality plastic. The inside of the bottle is treated with a flat surface polishing process. The inside is very smooth and will not damage or scratch your contact lens. . Easy cleaning: Simply place your cosmetic contact lenses on the holder, pour the cleaning solution into the bottle and gently turn the knob on the bottle cap to quickly clean your contact lenses. . Best Gift: This contact lens cleaning case has a simple appearance and a variety of colors, it is a very practical and beautiful gift for contact lens wearers, you can share it with your family or give it to yourself as a gift to your friends, they will like it very much. Notes:1. Due to manual measurement, please allow 1-3 cm error. Make sure you don't mind before you bid.2.Colors may vary due to different monitors, please understand. Thank you for your support :)