This Alden Tassel Loafer, featuring the Aberdeen last, is made from shell cordovan leather produced by Horween Leather Co., a tannery located in Chicago. Cordovan is a rare type of vegetable-tanned horse leather known for its exceptional durability, shine, and comfort. This particular leather is meticulously handcrafted by skilled artisans at Horween, a process that can take up to six months to complete. The model number is 563. It is available in E width. If you have any inquiries, please reach out to us.