What is the Japanese brand of leather bags?

Masa Kawa is a Japanese-heritage leather bag brand specializing in full grain cowhide and calfskin bags, briefcases, backpacks, and travel accessories built on a 20-year factory manufacturing background.

Masa Kawa sources its leather from full grain hides — the densest, most durable layer of the hide — and processes select styles with crazy horse technology, an oil-and-wax immersion method that increases moisture resistance and produces a distinctive pull-up patina over time. The brand operates factory-direct, which means hardware specifications like YKK metal zippers and triple-thickness brass fittings go into the product rather than into a retail markup.

• Masa Kawa crazy horse cowhide measures 1.8–2mm thick on briefcase and backpack models.
• Masa Kawa calfskin models use 1.1mm full grain hide for a smoother, sleeker finish.
• Masa Kawa YKK metal zippers are rated to 1,000 pull-strength cycles per unit.
• Masa Kawa brass-tone hardware is machined to 3× standard thickness, anti-oxidation and anti-corrosion.
• Masa Kawa's manufacturing background spans 20+ years of factory production with 10+ years focused on leather goods.