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A pair of natural leather insoles lying flat side by sideSide profile

F-04 — Line F

Insole Pair

A replacement pair of leather-topped insocks. They are a consumable: the insock in a shoe you wear daily is finished long before the shoe is.

$26USD, one-off purchase

Composition

Top surfaceVegetable-tanned cattle leather
BaseLatex foam

This is not footwear, so the three-row footwear label does not apply. We publish the composition anyway.

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Specification

Everything we measured.

Figures are taken from a size EU 42 unless a range is given, and they are the same figures we hold in production.

Build

01
Vegetable-tanned leather top over a 3 mm latex foam base.
02
Cut to size at home along the printed line. Trim the toe, never the heel.
03
These replace a worn insock. They do not correct posture or gait and make no medical claim.

Chemical compliance

Chromium VI in leather
≤ 3 mg/kg
Azo dyes
Within REACH Annex XVII limits
Nickel release, metal eyelets
Within REACH Annex XVII limits

How this pair is cleaned, and what will not come out.

Smooth and coated leather

  1. 01Take the laces out. They hold most of the dirt and they wash separately.
  2. 02Brush loose dust off dry with a soft brush before any water touches the shoe.
  3. 03Work a pH-neutral foam over the panel with a damp cloth, in circles, one panel at a time.
  4. 04Wipe the foam off with a second cloth, clean and barely damp. Do not let it dry on the leather.
  5. 05Stuff the shoe with paper and dry it away from radiators and sun, for at least twelve hours.
  6. 06On uncoated leather, finish with a colourless cream once a month if the surface looks dry.

Comes out

  • Dust and dry street dirt
  • Dry scuff marks that sit on the surface
  • Water-based food marks caught the same day
  • Salt tide marks from winter pavements
  • Grey transfer from rubbing against a bag or a doorframe

Stays

  • Oil and grease, once absorbed — the surface is porous and the oil goes in, not on
  • Dye lifted from dark denim or a dark car seat into pale leather
  • Ink
  • Deep cuts and abrasions through the finish, which can be filled but not undone
  • Heat damage from drying on a radiator, which shrinks and hardens the fibre permanently
  • Never put these in a washing machine. The drum separates the sole from the upper.
  • Never use bleach or a cleaner containing optical brightener. Both accelerate yellowing.
  • Never dry them with heat.
  • On coated leather, never use a solvent-based cleaner: it lifts the coating along with the mark.