Detailed Hand tooled, carved and painted vegetable tanned American Cowhide Leather exquisitely done by the finest craftsmen in the country. High quality Genuine Full Grain Leather. Soft and supple leather that ages beautifully as it wears. High grade Stainless Steel Metal fitting Size 41 - Fits I-watch strap between 38mm to 41mm Size 45 - Fits I-watch strap between 42mm to 45mm