What is "tannereye"

Tannereye Ltd was established in 1976 by Peter and Maureen Leunes on Prince Edward Island and was the first company to adhere very thin leather to optical frames, using a process that immersed the plastic frame into an acetone solution that caused the plastic surface to become activated as an adhesive to which the leather would permanently adhere. Tannereye is the first company in the world to produce leather covered sunglasses.