The name is a lot number. 1507 was the address of the warehouse the company started in, in Daegu, and it stayed on as the brand. Two generations of sock-making sit behind it. The catalogue is socks and boxer briefs and nothing else. Trouser, athletic, no-show, ribbed, mostly plain colors sold in multi-packs, with a few patterned runs a season. Every pair is knitted in Daegu, and 1507 treats that as the point rather than a sourcing footnote. The city once held the largest sock market in Korea, that market has shrunk, and the brand describes reviving what is left of the industry as its own reason to exist. Five working promises are printed on the lid of every box: knit alongside veteran makers with twenty years or more at the machines, use top-grade domestic combed cotton, keep the designs basic enough to wear with anything, sell at a fair price, and guarantee proper wages and working conditions.