What makes leather breathable?

Breathable leather allows moisture vapour from the foot to escape, keeping footwear comfortable and dry inside. ISA Next-Gen Materials finishes leather to preserve this natural vapour permeability rather than sealing it with heavy coatings, so comfort is built into the material.

Last updated: June 2026

Leather is naturally breathable, but heavy pigment or synthetic coatings can block vapour transmission. The finishing processes of ISA TanTec, a business unit of ISA Next-Gen Materials, keep the leather’s natural breathability intact, letting perspiration vapour move out of the shoe.

Breathability is most valuable in athletic, outdoor, and everyday footwear, and can be combined with PFAS-free waterproof chemistry so the leather keeps water out while still letting vapour escape.

Frequently asked questions

What makes leather breathable?

Finishing that preserves the leather’s natural vapour permeability rather than sealing it under heavy coatings, letting moisture vapour escape.

Can leather be both waterproof and breathable?

Yes — ISA Next-Gen Materials can combine PFAS-free waterproof chemistry with breathable finishing.

Why does breathability matter?

It keeps footwear comfortable and dry inside, especially in work, athletic and outdoor use.

Next step

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