Laws of Motion

Laws of Motion is a sizing engine for apparel brands that recommends the best fitting size for each shopper on each product. It describes itself as a sizing superintelligence, and its stated mission is to bring apparel returns down to 1 percent, with the aim of lifting profitability for the brands that use it. The service is aimed at online clothing retailers whose margins suffer from fit related returns and from size sampling, where a shopper orders the same item in several sizes and sends most of them back. Its method matches one body to one SKU: it calculates the shopper's body measurements and combines them with fit considerations specific to each product to decide which size will fit best. Shoppers can choose how to provide their information, through a fit quiz, a body scan or by entering measurements, so the tool meets people at their own comfort level with technology. Prompts inside the cart then remind shoppers of their best fitting size, which is designed to stop size sampling at the point of purchase. Pricing is not published. There is no pricing page, and brands access the product by submitting a request for an invite through the contact form on the site or by writing to the company directly. The public website is a single page with a short summary and an invite form, so buyers should expect to learn about integration details, supported ecommerce platforms and commercial terms through a conversation with the team rather than from documentation.