When you value comfort and fashion, Muk Luks Blake has your back. Durable quality meets superior comfort with a genuine leather upper and soft polyester lining. These shoes feature side zipper accent. Warning: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. Material: Leather, Polyester, Rubber.