The Brand Ambassador agrees that all files, documents, letters, memoranda, reports, records, data sketches, drawings, models, laboratory notebooks, program listings, computer equipment or devices, computer programs or other written, photographic, or other tangible material containing Proprietary Information, whether created by the Brand Ambassador or others, which shall come into Brand Ambassador's custody or possession, shall be and are the exclusive property of the Client to be used by the Brand Ambassador only in the performance of Brand Ambassador's duties for the Client and shall not be copied or removed from the Client’s premises except in the pursuit of the business of the Client. All such materials or copies thereof and all tangible property of the Client in the custody or possession of the Brand Ambassador shall be delivered to the Client, upon the earlier of (i) a request by the Client or (ii) the termination of this Agreement. After such delivery, the Brand Ambassador shall not retain any such materials or copies thereof or any such tangible property.