; or (B) has naturally occurring polymers, such as proteins or starches. (3) Refill; refillable; reusable; reuse The terms refill , refillable , reusable , and reuse mean— (A) with respect to packaging or a food service product that is reused or refilled by a producer, 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, or for another purposeful packaging use in a supply chain; (ii) designed for durability to function properly in 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 (as defined in section 12000 of the Solid Waste Disposal Act); (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 (as defined in section 12000 of the Solid Waste Disposal Act)