Kirkland Signature

Kirkland Signature is Costco's in-house label, launched in 1995 and named for the warehouse club's then-headquarters in Kirkland, Washington. It spans food, household goods and apparel, with clothing covering basics, outerwear, activewear and the merino-blend crew and trail socks that outdoor reviewers treat as a budget alternative to Smartwool. Goods are produced by contract manufacturers to Costco specifications and sold to members only, typically in multipacks at mass-market prices — sock four-packs run roughly $13-$17. The label now accounts for about a third of Costco's total sales.