Luxuriously hand-crafted in the States from vegetable tanned American Cowhide Leather, our Austin WatchBands are mastered with artisanal detail. Revel in the excellency of the genuine full grain leather - soft and supple, with an attractive patina as it ages. Adorned with high-grade stainless steel metal fittings. Size 41 - Fits I-watch strap between 38mm to 41mm Size 45 - Fits I-watch strap between 42mm to 45mm