Seif Design is an Estonian brand known for its unique stone-design card holders. Seif Design only uses fully recyclable materials for packaging and has transferred its processes to green energy, which comes from solar panels. All Seif Design products are made in Estonia. Former president of Estonia Kersti Kaljulaid: "A wallet made from stone is as sustainable as it gets! A true counter to things with a short lifespan, hopefully lasting from father to son. I love it when things don't break or wear away."