Chrome made the first messenger bag over 15 years ago. They needed a quick-release buckle for getting a fully loaded bag off quickly. They didn't have money to make their own buckle, so they salvaged a seatbelt buckle from the local auto yard and an icon was born. To maximize durability and weatherproofness, every Mini Metro is made twice. The inside liner is made with military-grade, 18-oz truck tarpaulin. The outside is made with abrasion-resistant, 1000-denier CORDURA® Brand fabric.