Kirkland Signature brand ladies trail socks are displayed for sale

Customers exit a Costco Wholesale Corp. store in Mount Prospect, News Photo - Getty Images

Kirkland Signature brand ladies trail socks are displayed for sale at News Photo - Getty Images

736 Sock Market Stock Photos, High-Res Pictures, and Images - Getty Images

741 Sock Market Stock Photos, High-Res Pictures, and Images - Getty Images

118 Sock Exchange Stock Photos, High-Res Pictures, and Images - Getty Images

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113 Kirkland Signature Stock Photos, High-Res Pictures, and Images - Getty Images

120 Sock Exchange Stock Photos, High-Res Pictures, and Images - Getty Images