The dark brown SECONDSKIN passport case's flexible and resilient exterior is perfect for travel. This elegant accessory is lined with durable polyester to protect your essential documents. Polished ultrablack finishes and the Zegna Logo add a final accent.; Main body: Calf Leather Lining: 100% Polyester SECONDSKIN is crafted by tanneries selected for their renowned expertise. Fine, supple and incredibly soft to the touch, it moulds to your proportions over time - offering impeccable comfort with each wear. Protect from moisture and do not place near direct sources of heat. Clean with a soft cloth. Do not use solvents or polishes. Avoid contact with cosmetics, perfumes and hand lotions and sanitizers. Store in a cool, dry, well-ventilated place. Stow in the included dust bag when not in use.