"Kirkland Signature" is Costco's private label. It is found at Costco's website, Costco warehouses, and on Amazon.com and is trademarked by the company.
It's been nearly 20 years since the first Kirkland Signature™ products appeared at Costco. Has this line of private-label products achieved its goal of offering members a unique value in their everyday purchases? (http://www.costco.com/kirkland-signature.html), (https://en.wikipedia.org/wiki/Costco)