4-Pair Kirkland Signature Men’s Merino Wool Blend Sock $12.99January 2, 2026Deals 4-Pair Kirkland Signature Men’s Merino Wool Blend Sock $12.99 at Costco. 57% Merino Wool | 24% Repreve Recycled Nylon | 16% Nylon | 3% Elastane Full cushion with durable reinforced heel and toe Arch support for superior fit Smooth finish toe seam Tags# #ad