We have made it our mission to use the best materials in terms of quality and sustainability. Take our Blake-stitched ankle boots, for example. Upper leather: Finest, vegetable-tanned calfskin from Tuscany. Lining leather: We source the glove-soft, breathable leather from Ecopell in Southern Germany. Leather soles: We obtain the high-quality soles and heel blocks from the traditional company Joh. Rendenbach in Trier. From the upper leather to the sole, everything is vegetable-tanned. Our Ecopell leather has received the strictest seals for environmental protection & skin compatibility; it is Biokreis, IVN, and ECARF certified.