Culture Sustainable Fashion Zeal Releases Stylish Sunglasses Made From Castor Oil By Emma Grady is a fashion writer whose work has appeared in Vanity Fair, Glamour, Good Housekeeping, and more. our editorial process Emma Grady Updated October 11, 2018 ©. zeal optics Share Twitter Pinterest Email Culture History Travel Sustainable Fashion Art & Media Holidays Community © zeal optics. Zeal Optics sustainable sunnies are made with castor bean oil. Sustainable sunglasses are a hot topic here at TreeHugger. We've seen sunnies made from recycled stainless steel, repurposed plastic, and bamboo, but castor bean oil? This plant-based resin is new to the eco-accessory scene. But Zeal Optics is tapping, what they call, "Z-Resin," for all frames in their 2013 collection of men's and women's sunglasses, which come in styles that will suit anyone who wants to balance function and fashion. © zeal optics. Zeal Optics "Darby" sunglasses.Thanks to their light weight and snug fit, Zeal's sunglasses are built to be worn out in the world and are best for an active lifestyle. And if a strut down the street is the most activity you see, then the fashion-forward "Darby" and "Hadley" will do the trick. © Zeal Optics. Zeal Optics "Hadley" sunglasses. © Zeal Optics. Zeal Optics "Sawyer" sunglasses. Based in Boulder, Colorado, Zeal aims to incorporate sustainable practices into their everyday operations. They use Forest Stewardship Council certified paper when possible and recently moved their headquarters to a newly-renovated space that was constructed using beetle kill wood. "We create products that need to make a positive impact on the environment, because our lifestyle depends on it," Joe Prebich, Zeal's director of marketing, said in a press release. "Preserving the environment we enjoy every day will always be a priority [for Zeal].” © Zeal Optics. Zeal Optics headquarters in Boulder, Colorado. Zeal is positioning their brand as "the only sunglass line in the world with every frame built out of a plant-based resin." The key words being "every frame." We previously reported that Smith Sport Optics used Pebax Rnew, a castor-oil-based plastic resin in their “Evolve” sunglass collection from 2010. Beyond eyewear, Pebax Rnew has been used in ski boots and sneakers. The North Face has also taken note of the renewable alternative for fossil fuel petroleum-based products: they re-released their Venture Jacket Spring 2011 with the inclusion of castor oil into its HyVent DT EC waterproof/breathable membrane. © Zeal Optics. Zeal Optics "Brewer" sunglasses. Zeal Optics 2013 collection, pictured above, will be available in stores and at ZealOptics.com come September 1st.