Sustainable Fashion Startups funded by Y Combinator (YC) 2026

Jamble is the new place to buy & sell secondhand fashion. We empower resellers with video & Live streaming tools to sell more effectively; and buyers with a unique compelling experience. Jamble is designed for the sustainable fashion community to engage, connect and inspire. We’re a mobile-first platform and launched on iOS! 👉 Check us out: https://apple.co/3Pfwran

Today, Retailers have to make 1000s of complex operational decisions every day, all impacting their bottom line.This problem is being currently tackled with excel or legacy systems, both no longer fit for purpose. We make a platform that lets retailers make optimal decisions, easily and quickly. We ingest a retailer's data, generate recommendations and then allow users to approve a given action. Our platform covers topics including product pricing, inventory replenishment and re-ordering with the goal of covering all operational processes.

The first apparel & footwear Carbon Management Platform.

Getting clothes tailor-made is very common in India, especially for women. Saree blouses have to be tailor-made always due to their fitted nature & the non-stretchiness of typical Indian fabrics. The tailoring market however, hasn't evolved at all. It is highly fragmented with a low NPS. The end user experience demands a significant amount of the customer's time, involving visits to a physical shop & avoidable back & forth. This is increasingly unviable for busy urban Indian women. We make it super easy by letting women place an order online, get fitted at the comfort of their homes, help them with styling their fabric & deliver the made-to-measure clothes directly to their doorstep.

Skyscrape makes temperature responsive fabrics for a new type of clothing. These fabrics literally change shape in response to a change in temperature: the fabrics become thicker and insulate more as the temperature drops, and they become thinner and insulate less as the temperature rises again. This "intelligent insulation" has no wires or sensors, and the fabric's shape-changing behavior comes from a natural materials response. Skyscrape’s fabrics offer expanded thermal comfort across a wider temperature range than conventional clothing. Creating textiles that could change shape with changing temperatures required years of laboratory work by an interdisciplinary team of scientists, engineers, designers, and weavers, designing and refining machines and processes to make yarns and fabrics that could adapt to the environment. Skyscrape's first market entry was with Ralph Lauren in the 2022 Team USA Winter Olympics Opening Ceremony.

Curtsy is [an app](https://apps.apple.com/us/app/curtsy-thrifting-delivered/id1029107786) that lets women buy and sell clothing, shoes, and accessories from their phones. Curtsy doesn't hold inventory; all orders ship directly from sellers to buyers. We make money by deducting a 20% fee from each sale. Curtsy's go-to-market strategy has been to focus on ~Gen Z women ages 15-30, who are underserved by the major players in the space like Poshmark and Ebay.