Starting a footwear brand? 6 leather decisions first
Everything below is written for someone buying leather for the first time. Every trade term is explained the first time it appears, because the vocabulary is most of the barrier.
A guide by TL San Martín, a tannery of origin in Elda (Alicante, Spain) since 1995, LWG Gold certified under the Leather Manufacturer standard — the only standard where a Gold medal exists.
Six material decisions are made before your first prototype exists, and three of them cannot be reversed without buying the leather twice. They are: the article family, the substance, the tanning route, the colour, the lining, and who you buy from. Your factory will decide four of them by default if you don't — using whatever is already in its warehouse.
Which decisions lock, and when?
A decision "locks" at the moment undoing it means paying for material again. That moment is almost never where a first-time founder expects it.
| # | Decision | Locks at | Cost of changing it afterwards |
|---|---|---|---|
| 1 | Article family (the specific finished leather: nappa, nubuck, suede, patent, oiled) | Approved prototype | Low if you re-prototype; high once the last and pattern are cut around its behaviour |
| 2 | Substance (thickness in mm) | Pattern cutting | Medium — the pattern was graded for a given stiffness |
| 3 | Tanning route (chrome / chrome-free / vegetable) | Colour development | High — restarts the whole colour process |
| 4 | Colour (your shade, matched to a reference) | Lab dip approval | High — a made-to-order colour is a dedicated production batch |
| 5 | Lining | Prototype fitting | Medium |
| 6 | Supplier type (tannery or reseller) | First bulk order | High — a different supplier means a different batch, so a different shade |
The three in bold are the ones that cost real money. Notice what they have in common: all three are about the batch, not the swatch.
What do the six decisions actually mean?
1 · Article family. "Leather" is not a material, it's a category. A nappa is a smooth, soft, finished upper leather. Nubuck is sanded on the grain side; suede is the underside of the hide, sanded. Patent is coated with a high-gloss film. They cut, last and age differently, so pick the family before the colour, not after. Start from our overview of leather for shoes.
2 · Substance. Substance is thickness in millimetres, measured to ISO 2589. It is the single most common spec a first order gets wrong, because founders ask for "good quality" and the tannery needs a number.
| Product | Upper substance | Lining |
|---|---|---|
| Barefoot / minimalist shoe | 1.0–1.2 mm | 0.6–0.8 mm |
| Sneaker | 1.2–1.4 mm | 0.6–0.9 mm |
| Derby, loafer, dress shoe | 1.2–1.6 mm | 0.8–1.0 mm |
| Boot | 1.4–1.8 mm | 0.9–1.2 mm |
| Children's footwear | 1.0–1.4 mm | 0.6–0.9 mm |
Tolerance is normally ±0.1 mm, and it is measured across the hide, not at one point. The Spanish-language guide to leather substance by product has the full table.
3 · Tanning route. Chrome tanning gives softness, colour range and consistency; chrome-free (usually glutaraldehyde or synthetic tannage) gives you a claim that matters in kids' and barefoot segments and avoids chromium VI questions entirely; vegetable tanning is firm and moulds, which is why it belongs under the foot rather than over it. This is a brand decision, not just a chemistry one — chrome vs chrome-free tanning sets out what each one buys you.
4 · Colour. You will be asked for a reference — a Pantone code, or better, a physical sample. The tannery then produces a lab dip: a small piece dyed to match, which you approve or correct. Expect 2–3 weeks per round. Approving the lab dip is the moment your colour becomes a batch: a defined quantity of hides tanned and dyed together. Everything cut from one batch matches. Across two batches, a small shade difference is normal and expected — see sample-to-bulk consistency.
5 · Lining. The lining is what touches the foot, and it is where cheap sourcing shows first. Chrome-free linings are standard for children's and barefoot brands; the reasoning transfers directly from lining leather for barefoot shoes.
6 · Who you buy from. A tannery turns raw hides into finished leather in its own plant. A distributor buys finished leather and resells it. Only the first controls your colour and can repeat it next season. Tannery vs leather distributor is the qualifying test.
How much money does one colour actually tie up?
This is the arithmetic nobody shows a first-time founder, and it is why the colour decision matters more than the colour.
- One adult pair of shoes consumes roughly 0.30–0.32 m² of upper leather, including cutting waste.
- A bovine hide yields roughly 4.5–5.5 m² of usable area, so one hide ≈ 15 pairs.
- A typical made-to-order colour minimum of 300 m² is therefore around 950 pairs of uppers.
If your factory's minimum is 300 pairs per model, one colour has just bought leather for roughly 650 pairs you will not make this season. The full breakdown, in pairs and in blocked euros, is in leather MOQ in pairs and inventory, and the consumption maths is in how many hides do I need.
Two ways out, both decided before the lab dip: launch on an existing stock colour for season one, or share a batch with other brands. Neither is available once your dedicated colour is in the drum.
What does a tannery need from you to quote?
Send these five things and you will get a real price instead of a brochure:
- Product and volume — "1,500 pairs of a minimalist sneaker, first season."
- Substance in mm, upper and lining.
- Colour reference — Pantone code, or a physical swatch posted to them.
- Article family and finish — nappa, nubuck, oiled, matt or gloss.
- Compliance you need on paper — chromium VI report, REACH, and any certification your buyers ask for.
On certification, one distinction saves arguments later: the Leather Working Group runs four standards, and only the Leather Manufacturer and Commissioning Manufacturer standards carry a Gold, Silver or Bronze medal — a Trader certificate tops out at "Approved". The medal is awarded at the level of the lowest-scoring of 17 audited sections, and traceability is scored separately as a percentage. Read the PDF, not the logo: how to read an LWG certificate.
One date to have in your calendar: under Regulation (EU) 2025/2650 the EU Deforestation Regulation applies from 30 December 2026 for large and medium operators and 30 June 2027 for micro and small ones. The Commission adopted a delegated act in July 2026 to remove bovine hides, skins and leather products from Annex I — until that act is in force, treat leather as potentially in scope and ask your supplier what documentation they will provide. Details in EUDR and the leather exclusion, and the official position on the European Commission's Access2Markets page.
Frequently asked questions
Do I choose the leather, or does my factory?
You do — or your factory does it for you, from its own stock, in whatever colour it already has. Factories are excellent at making shoes and are not material specialists. Choosing the leather yourself is also the only way to keep the same shade when you change factory.
Can I start without a minimum order?
On the leather itself, yes — an existing stock article can be bought in small quantities. The minimum appears the moment you ask for your colour, because that creates a dedicated batch. So season one usually runs on stock colours, and a made-to-order shade arrives in season two with real sales data behind it.
How long does the material take, start to finish?
Budget 2–3 weeks per lab dip round (assume two rounds), then 4–6 weeks for bulk production once the colour is approved. Roughly three months from first request to leather at your factory door — which is why material is decided before the prototype, not after.
What is "crust", and why does it keep coming up?
Crust is leather that has been tanned and dried but not yet coloured or finished. It's the stage at which the article is still neutral, which is precisely why colour minimums are set there. When a supplier says "we hold crust", it means they can produce your colour to order rather than only sell you what's already finished.
Equipo técnico de TL San Martín — curtidor de origen en Elda (Alicante) desde 1995. LWG Gold bajo el estándar de Leather Manufacturer, el único estándar en el que la medalla Gold existe; un Trader llega como máximo a "Approved".