Hackett Bespoke Sunglasses. Model Number HEBS261. Shape: Square. Lens Width: 51mm. Lens Bridge: 17mm. Arm Length: 145. Frame Material: Acetate. Frame Color: Tortoise. Lenses Type: Brown . Rim Style: Full-Rim. UPC/EAN Code: 840311405336. Hackett Bespoke Tortoise Square Mens Sunglasses