First Shoes & Toddler Shoes with Leather Authentication of Oeko-Tex Standard 100; first Shoes and Toddler Shoes Using the Oeko-Tex Standard 100 Certification Leather. Ninos; Product Features; we use Oeko-Textornat Leather on Inner, Outer and Intermediate Layers of our Shoes. while Giving the Wearer a Strong Sustain, this Leather Peculiarity is its Moisture Absorption and Release Ability ...