Photo: RoToTo
A sock knitted on century-old machines in Nara — merino pile inside, a cotton-wrapped skin outside, built to be worn for years.
Verdict
| What it is | RoToTo Double Face Merino Pile socks, R1632 — merino pile with a cotton-covered surface, nylon-reinforced toe, heel and sole |
| Price | ¥3,300 incl. tax — RoToTo’s own store, checked Mon Nov 2, 2026 |
| Availability | Listed on the maker’s own store at check, in sizes S / M / L across five colourways |
| The angle | Koryo, in Nara, has made socks since 1910 — and RoToTo still knits there on low-gauge machines nobody manufactures anymore |
| Verdict | Construction aimed at a consumable’s weak points: friction, toe, heel, sole. A consumable you can love for a lifetime — their words, earned. |
What it is
Koryo, in Nara, has made socks since 1910 — and RoToTo still knits there on century-old low-gauge machines. They run slow and loose, and the texture can’t be rushed. Nobody makes the machines anymore, so the factory keeps them alive. The Double Face takes an outdoor and trekking sock as its design source and re-fits it for daily wear: merino wool pile for warmth and cushion, knitted so the surface is covered in cotton — the maker’s answer to wool’s known weakness against friction.
The reinforcement is placed where socks actually fail. Nylon yarn runs through the toe, heel and sole panels — visible on the charcoal colourway as the contrast toe cap, heel and sole — so the merino pile is not the first thing the shoe rubs through. The result reads less like apparel and more like equipment: each material is where its property is needed.
Why it matters
Socks are the most replaced item in a wardrobe, usually because they are built as one material doing every job. The Double Face splits the jobs: pile for insulation, cotton skin for abrasion, nylon at the strike points. It is also a record of a production method that survives only because one factory maintains machines no longer made. At ¥3,300 it is a regular line, not a collaboration — the Spotted lane for apparel exactly: construction as the design, at an everyday price.
Specs
| Brand | RoToTo (Koryo, Nara, Japan) |
| Model | Double Face Merino Pile Socks, R1632 |
| Construction | Merino wool pile; surface knitted with a cotton covering for durability (per maker) |
| Reinforcement | Nylon yarn at toe, heel and sole (per maker) |
| Design source | Outdoor and trekking socks, re-fitted for daily wear (per maker) |
| Sizes | S (23–25cm), M (25–27cm), L (27–29cm) (per maker) |
| Colourways | Five listed on the maker’s store, incl. charcoal (per maker) |
| Care | Do not tumble dry — shrinkage (per maker) |
What to check before buying
- Size by foot length, not shoe size. The maker lists centimetre ranges: S 23–25, M 25–27, L 27–29. A pile sock also takes room inside the shoe — allow for the loft.
- Pile is warmth. This is a cold-season weight, built from a trekking brief. In a slim shoe or a warm climate it is the wrong tool.
- No tumble dryer. The maker states it plainly: drying causes shrinkage. Line-dry is part of the ownership cost.
- Ordering is from Japan. Price is yen incl. tax on the maker’s store; shipping is calculated at checkout on the store’s terms.
Price record
| Price | ¥3,300 incl. tax |
| Source | RoToTo’s own store (rototo.jp), checked Mon Nov 2, 2026 — listed at check in S / M / L across five colourways |
| Featured on our Instagram | Mon Nov 2, 2026 — Spotted |
Want one?
- In the shop: browse current stock — one-off pieces, and they turn over fast.
- Hunting one? Join the Want List — tell us the maker and the budget; pieces like this surface in our trawl most weeks.
- This one: at the source — See it at RoToTo. Not our listing. See Disclosure.
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Spotted, not sold by us — this piece lives at RoToTo. Prices are a snapshot from when we spotted it. Disclosure
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