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Who Really Makes Costco’s Kirkland Signature Items

While some of these names are public knowledge, others remain a closely guarded secret.

When Costco customers see the red and black Kirkland Signature label, they know they’re going to get a good product at a great price. But they don’t always know who’s making it.

Store brand products like Kirkland are typically manufactured by third parties, not the store itself. Many of these behind-the-scenes companies are actually famous retail titans, so you can save big on your grocery bill without losing quality.

While plenty of the names behind Kirkland Signature products are public knowledge — some printed right on the box — others remain a closely guarded secret. More than a few rumors have popped up from people claiming to be in the know.

Here are the names we can confirm and the myths we can debunk, assuming no recent supplier swaps:

Stearns & Foster mattress

Confirmed.

Mattresses probably aren’t the first item on your Costco shopping list, but the company does offer a generous selection that includes Novaform and Sleep Science, as well as its own Kirkland brand.

The Kirkland Signature mattress, however, is the result of Costco’s partnership with Stearns & Foster. The Kirkland Signature by Stearns & Foster Lakeridge Mattress uses memory foam and gel foam and comes in king, California king and queen sizes.

The company dates back to 1846, when Seth Foster and G.S. Stearns got together to manufacture cotton goods for horse carriage upholstery. They later moved on to hotel mattresses.

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