TL San Martín

Comparison · Leather grades

Full grain vs corrected grain vs split leather

The single biggest driver of leather quality is which layer of the hide you use. Here is the difference between full grain, corrected grain and split — and when each makes sense.

TL San Martín technical team Updated: 2026-06-08 Español · English

Full grain uses the intact top layer of the hide and is the strongest and finest; corrected grain is that top layer sanded and re-embossed to hide defects; split is the lower fibrous layer separated from the grain. Full grain is premium and ages with patina, corrected grain lowers cost and evens out appearance, and split is the most economical (used for suede, linings and work leather).

The three grades

GradeWhat it isStrength / lookTypical use
Full grainIntact top layer, unsandedStrongest; natural pores; ages with patinaPremium footwear & leather goods
Corrected grainTop layer sanded + re-embossedUniform; hides defects; less breathableMass-market footwear, consistent colour runs
SplitLower fibrous layer, separatedWeaker; no natural grainSuede, linings, work leather

How to choose

This sits on top of the finish (nappa, patent, metallic, embossed). For the finish dimension, see types of leather for footwear; for the fundamentals, what is leather.

Frequently asked questions

Is corrected grain real leather?

Yes. Corrected grain is genuine leather — the top grain layer that has been sanded and re-embossed to even out natural marks. It is not synthetic. It simply trades some of full grain's natural character for a more uniform, lower-cost surface.

Is split leather bad quality?

Not bad — different. Split is the lower layer of the hide, weaker and without natural grain, so it is used for suede, linings and value items rather than premium uppers. Sanded split is what most suede is made from.

What is the most durable leather grade?

Full grain — it keeps the intact, densest top layer of the hide, making it the strongest and longest-lasting, and it ages with patina rather than wearing out.