Kirkland Signature products are the in-store brand of Costco, a popular wholesale members-only warehouse club. The Kirkland Signature label is applied to roughly 10 percent of products sold in Costco and is found on a wide variety of items throughout every store, from potato chips to blue jeans. Kirkland Signature products may also be bought online. Like many store brands, emphasis is placed on high quality and value.
Kirkland Signature products need not necessarily be made specifically by Costco, and many items are simply popular name-brand products that carry the Kirkland Signature label. The company places particularly high emphasis on quality, and every product carrying the label must meet the company's strict quality standards before wide release.