This product is not returnable.These are not certified for medical use and we make no representations, warranties or promises, express or implied, regarding the efficacy of these products to prevent, or reduce exposure to any illnesses, viruses or other medical conditions. We will not be responsible if used for medical use.Team Store and the National Association of REALTORS® shall in no way have any responsibility for, or incur any liability with respect to use or application of these products...