Steve Calder, who'd already introduced Neapolitan tailoring to Australia through his made-to-measure service Calder Sartoria, started Informale in 2018 after failing to find a simple pair of linen trousers he actually wanted to wear. The name is Italian for "informal," reflecting the brand's mix of Italian tailoring with workwear and military references, and materials are sourced from mills in Australia, Italy and England. Everything is made within a few kilometers of Calder's Melbourne headquarters, letting him oversee the entire manufacturing process himself.