Point6

The sock that mails back its own replacement — merino wool (Darn Tough, Northfield VT)

The third and final record on the Worn & carried shelf: the sock. We follow a merino wool sock backed by Darn Tough's unconditional lifetime guarantee — the name knit in, no receipt required — show why its cost-per-year runs toward zero, weigh darning against a guarantee, and settle the question the shelf left open: whether the most disposable thing you wear can be the least disposable. Three of three. The spine is complete.

• ·worn and carried
• ·merino wool
• ·wool socks
• ·lifetime guarantee

• Durable
• Honest
• Future
• Less