Who makes Kirkland Signature Nitrile Exam Gloves, 400-count?
No reliable public evidence identifies the manufacturer of Kirkland Signature Nitrile Exam Gloves, 400-count as of July 6, 2026.
The common claim
What most answers say — and what the evidence supports
The most common online answers say Kirkland Signature nitrile gloves come from an unnamed Thai glove factory (the box does read 'Made in Thailand'), with some reviewers guessing at Halyard's Sterling line based on look and feel. Costco's product-detail data lists a manufacturer-of-record of '4 Cascade Partners LLC,' but that company's own U.S. import record consists of disc-golf sets and acrylic display stands sourced from South Korea - not nitrile gloves from Thailand - so it does not credibly identify the glove maker. No tier 1-5 source names the manufacturer.
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.com product-detail 'mfName' (manufacturer-of-record) field, via Wayback Machine (costco.com blocks automated fetch) July 6, 2026
The Kirkland Signature Nitrile Exam Gloves, 400-count, Size Large PDP (item 4000395299, snapshot 2026-02-23) lists mfName '4 CASCADE PARTNERS LLC.' Unlike the jeans and tee mfName values (which name plausible apparel houses), this entity is not a credible glove maker: 4 Cascade Partners LLC (Solana Beach, CA / Renton, WA) has an import record of disc-golf sets and acrylic display stands sourced from South Korea, with no nitrile-glove or Thailand shipments - inconsistent with these gloves, which reviews and box labeling report as Made in Thailand. The mfName here names an implausible vendor-of-record and is not a reliable manufacturer signal; route inconclusive/contradictory.
FDA 510(k) premarket-notification database (openFDA device/510k) July 6, 2026
No 510(k) clearance for nitrile exam gloves filed under 'Kirkland,' 'Costco,' or '4 Cascade Partners.' The Kirkland line is sold as 'exam gloves' but appears to piggyback on an OEM's 510(k) not filed under the Kirkland name, so this route does not name the maker.
FDA device registration & listing (openFDA device/registrationlisting) July 6, 2026
The only proprietary-name hits for 'Kirkland' are an unrelated dental instrument (the 'Kirkland periodontal knife' - a surname, not the Costco brand). No glove manufacturing establishment is registered under the Kirkland Signature brand.
FDA / CPSC recall and enforcement databases July 6, 2026
No recall or enforcement action naming Kirkland Signature nitrile gloves or a co-packer. The recall route surfaced no manufacturer.
Product reviews & country-of-origin sweep (Armbrust American glove review, CostcoFan, Innovative Bioscience) July 6, 2026
Reviewers report the box states 'Made in Thailand' (home to major nitrile producers such as Sri Trang, and neighboring Malaysian makers Hartalega and Top Glove), but none name the specific factory. One review notes only that 'Kirkland always partners with some of the best manufacturers in the entire world' without identifying one.
Community/rumor scan (Reddit, glove-review blogs) July 6, 2026
The main tier-6 guess is that the gloves resemble Halyard's Sterling nitrile line (Owens & Minor); this is a look-and-feel comparison, not sourcing evidence, and no consistent maker is named.
Frequently asked
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