Who makes Kirkland Signature Freezer Gallon Plus / Quart Plus Bags, Double Zipper?
No reliable public evidence identifies the manufacturer of Kirkland Signature Freezer Gallon Plus / Quart Plus Bags, Double Zipper as of July 5, 2026.
The common claim
What most answers say — and what the evidence supports
There is no reliable prevailing answer for who makes Kirkland Signature freezer bags. Coverage of the bags (Tasting Table, Chowhound, Apartment Therapy) praises them against Ziploc but names no manufacturer, and the guesses that circulate - Reynolds Presto Products, Inteplast, Poly-America, or SC Johnson by analogy to Ziploc - are unsupported: no recall, court record, executive statement, or archivable Costco disclosure ties any of them to the Kirkland freezer-bag SKUs. Unlike the Kirkland trash bags, whose 'Flex-Tech' sub-brand is a registered trademark, the freezer bags carry only generic descriptors ('Gallon Plus,' 'Quart Plus,' 'Seal Top,' 'Double Zipper') that point to no maker. No route resolves it, so no manufacturer is asserted here.
Evidence & sources
Costco does not disclose its suppliers, and no tier 1–5 source names the maker of this product. Below is the documented search — every database and record we checked, and what each one returned.
Costco manufacturername (mfName) product-detail field (items 4000312404 gallon / 4000312330 quart; businessdelivery 2001185414 / 2001185359) July 5, 2026
costco.com blocks automated fetch, and no Wayback snapshot of any Kirkland freezer-bag product page exists - CDX search returned zero captures for the gallon and quart PDPs - so the per-item mfName field could not be read for this SKU. Route unavailable/inconclusive.
CPSC recall database (SaferProducts.gov REST API) July 5, 2026
Zero recalls for 'freezer bag'; no co-packer surfaced via the recall route. The only 'Kirkland' recalls on file (Valdobbiadene Prosecco bottles; six-quart saute pans) are unrelated to bags.
USPTO trademark route (on-package sub-brand names) July 5, 2026
The Kirkland freezer bags carry only generic descriptors - 'Gallon Plus,' 'Quart Plus,' 'Seal Top,' 'Double Zipper' - none of which is a distinctive maker-owned trademark. This route cracked the Kirkland trash bags (the 'Flex-Tech' mark resolves to Poly-America), but there is no equivalent distinctive mark on the freezer bags to point at a manufacturer.
ImportYeti / US customs bills of lading July 5, 2026
No verifiable Kirkland-freezer-bag consignment surfaced. The circulating candidates (Reynolds Presto Products, Inteplast, Poly-America) are domestic US manufacturers, so US-sold Kirkland zipper bags would be produced domestically and would not appear in import bills of lading; Costco also masks shippers via freight forwarders. Absence of records proves nothing here (tier-5 caveat, same as trash bags and paper goods).
News and executive-statement sweep (Tasting Table, Chowhound, Apartment Therapy, The Sun, ConsumerAffairs, 'big brands behind Kirkland' roundups) July 5, 2026
No executive statement or investigative report names the maker of Kirkland freezer bags. The coverage compares the bags favorably to Ziploc on price and thickness but does not identify a supplier; the roundups of Kirkland products made by name brands cover foil (Reynolds), batteries (Duracell), and diapers, but not freezer bags.
Costco help/FAQ and chemical-disclosure (SDS) pages July 5, 2026
No Costco page names the freezer-bag supplier. The SDS route that names manufacturers for Kirkland detergents and dish soap does not exist for plastic goods (no chemical SDS is posted for zipper bags), so that avenue is unavailable, mirroring the trash-bags and paper-towels findings.
Community/rumor scan (Reddit r/Costco, content-mill listicles) July 5, 2026
Guesses are contradictory and evidence-free: Reynolds/Presto is the most repeated, with Inteplast and 'same as Ziploc/SC Johnson' also floated. No consistent, verifiable single maker emerges.
Frequently asked
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Are Kirkland freezer bags the same as Ziploc?
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