Amazon selects hit clothing products mainly based on the following factors: 1. Search data: By analyzing consumers' search and purchasing behaviors, determine which clothing styles or categories are popular and popular, and which keywords can guide customers to the shopping page.

2. User reviews: By examining user reviews, understand customer feedback, including information such as whether the size is accurate, whether the material is good, and whether the color matches, so as to improve product quality and customer experience.

3. Market trends: By tracking fashion and market trends, understand the development trends of the industry, and select fixed colors, popular elements and fashion styles to meet people's shopping needs. For the above reasons, Amazon can adopt data and trend analysis methods when selecting hit clothing products, while considering customer feedback and various factors to find the products that best meet market demand.