MATERIAL DETAILS: The Blue Square collection is made of calfskin with mineral tanning. The traditional tanning system maintains the beauty of the skin over the years. The raw-cut edges, hand-painted in blue, enliven the business character of the collection and represent a highly recognizable distinctive element. TECHNICAL DETAILS : Weight: 0.072 g Measurements: 12.50 x 9.00 x 2.00 (cm) Processing: raw cut Material: leather Credit card holder: 4 Animal skin: Bovine Composition Secondary fabric: 100% Polyester