Chrome made their 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 maximise durability and weatherproofness, every Mini Metro is made twice. The inside liner is made with military-grade, 18-oz truck tarpaulin and as an indication of size, can hold a single 6-pack of beer. The outside is made with abrasion-resistant, 1000-denier Cordura®.