Each pair of Filter Optix glasses come in a designer box with a case and a cloth inside.We recommend that you use the case, to avoid damage, whenever bringing your glasses with you or for safe storage. Our frames are made of high-quality acetate and metal, and our lenses are made of premium CR-39 material, so please take proper care of your Filter Optix glasses!Cleaning Filter Optix glasses:Our lens coating makes it very easy to remove smudges, dirt, dust, or other particles from the lenses. The provided cloth works great for cleaning the glasses.For a proper cleaning of your Filter Optix glasses follow these quick and simple steps:1. First make sure that your hands are clean. Then rinse your glasses with some (lukewarm) water to remove any dust or dirt. Avoid using hot water. 2. Use a tiny amount, or a small drop, of a mild lotion-free or neutral soap, and apply gently to both sides of the lenses.3. Rinse with water again, thoroughly, to remove any residual soap. 4. Carefully dry and wipe clean the lenses and the frame with the provided cloth. You may also use any clean and soft lint-free towels such as a microfiber cleaning cloth.Please avoid using hot water, any alcohol-based cleaning products or household cleaners containing chemicals on the glasses. Both extreme heat and chemical solvents may damage the lenses and negatively impact the coating.Also, avoid using the glasses in extreme heat conditions such as the sauna or exposure to direct sunlight for an extended period of time. For more see our Returns & Warranties policy or the Q&A.