The Guarantee certifies the traceablity of the origin, the correct execution of the tanning process and the natural characteristics of the vegetable-tanned leather produced by the tanneries associated with the consortium. Each trademarked certificate is printed with anti-counterfeiting techniques and bears a progressive serial number that allows the consortium to identify, at any time and anywhere in the world, both the tannery supplying the leather and the manufacturer of the product.
To attach the certificates to finished products the Consortium proposes the guarantee seal, a cord of natural cotton with an irreversible lock embossed with its logo.