What is the number 1 bag brand?

Could you please elaborate on what you mean by the "number 1 bag brand"? Are you referring to a specific category of bags, such as handbags, backpacks, or messenger bags? Additionally, what criteria are you using to determine the ranking of these brands? Is it based on popularity, sales figures, customer reviews, or some other metric? Without further context, it's difficult to give a definitive answer to your question. However, there are certainly many popular and well-regarded bag brands in the market, each with their own unique strengths and appeal.