; or (IV) toxic substances or chemical substances designated as high-priority substances under section 6(b)(1) of the Toxic Substances Control Act ( 15 U.S.C. 2605(b)(1) ), including the chemicals or mixtures of chemicals described in section 4(f)(3); (iv) supported by adequate infrastructure to ensure that the packaging or food service product can be conveniently and safely reused or refilled for multiple cycles; and (v) repeatedly recovered, inspected, and repaired, if necessary, and reissued into the supply chain for reuse or refill for multiple cycles; and (B) with respect to packaging or a food service product that is reused or refilled by a consumer, that the packaging or food service product is— (i) explicitly designed and marketed to be utilized for not less than the number of cycles that the Administrator determines to be appropriate, for the same product; (ii) designed for durability to function properly in its original condition for multiple cycles; (iii) composed of materials that do not contain— (I) toxic heavy metals; (II) pathogens; (III) additives; or (IV) toxic substances or chemical substances designated as high-priority substances under section 6(b)(1) of the Toxic Substances Control Act ( 15 U.S.C. 2605(b)(1) ), including the chemicals or mixtures of chemicals described in section 4(f)(3); and (iv) supported by adequate and convenient availability of, and retail infrastructure for, bulk or large format packaging that may be refilled to ensure the packaging or food service product can be conveniently and safely reused or refilled by the consumer for multiple cycles, as needed. (21) Single-use plastic (A) In general The term single-use plastic means a plastic product or packaging that— (i) is routinely disposed of, recycled, or otherwise discarded after a single use