Trendsi's three-layer fashion stack
Sherwin Xia, co-founder of Trendsi, on building the Shein for Utah moms
This middle layer is where a dropshipping tool turns into a real supply chain partner. The important shift is from endless product testing to protecting the few SKUs that actually drive the business. In fashion, a small set of winners usually carries most sales, so merchants need reserved stock, better unit economics, and branded packaging before ad spend and repeat demand can scale reliably.
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Trendsi is explicitly building around this progression. Sellers start with no inventory to test styles, then move into small pack wholesale and made to order private label once winners emerge. The company describes successful customers as using only 10 to 20% dropship, with the rest in wholesale and proprietary product.
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That positioning sits between two adjacent models. Faire lowers risk in wholesale with financing and returns, but retailers still buy inventory upfront. Unmade and Resonance go further toward on demand production, where brands can avoid finished goods inventory but accept more operational complexity and often higher per unit cost.
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The Shein comparison matters because the winning play in fashion is not zero inventory, it is very fast inventory turnover. Shein grew by launching huge numbers of styles in tiny batches, then restocking quickly when data showed demand. Trendsi is adapting that logic for small merchants instead of running a consumer brand itself.
The next step is a more blended fashion stack, where dropshipping becomes the sampling layer, reserved wholesale inventory becomes the profit layer, and private label becomes the brand layer. Companies that can bundle all three in one workflow will own more of merchant spend, because growing sellers do not want to rebuild their supply chain every time a product starts working.