100% Vegetable Tannins
Extracted from Mimosa Bark
Tochigi uses tannins extracted entirely in-house from the bark of Mimosa trees. Mimosa tannin has an ultra-low concentration of salts and acids, with a shockingly-low pH (usually around 4.6–4.8), and produces leather that better maintains the cellular integrity of animal hides. Further, this tannin has a natural affinity for collagen, resulting in long-lasting, chemically-stable leathers less prone to oxidation. Finally, Mimosa tannin is naturally resistant to many common bacteria and fungus, which helps reduce footwear odor.