What happens when high-tech materials meet heartfelt design? Colombian designer Neyla Coronel has an answer—and it comes in the form of a bra. Made using Balena.Filaflex, a flexible, bio-based and fully compostable filament co-developed by Balena and Recreus, Neyla’s creation is challenging everything we thought we knew about intimate apparel, sustainability, and the power of design to liberate the body.
At Green Prophet, we’ve followed how Balena is reshaping the fashion industry—literally. The brand has already made headlines for its partnership with Stella McCartney, producing fashion-forward, circular solutions that don’t compromise on ethics or style. Their fully compostable slip-on shoes turned heads in Paris and New York, proving that sustainable fashion doesn’t have to look like a compromise.
But Neyla’s latest work adds something deeper: the personal. It’s a a bra designed by—and for—the body
Raised in a culture of rigid beauty standards, Neyla says her design process began with a reckoning. “I realized my body was never the problem,” she shares. “It was the fashion industry’s limited offerings.”
Working with 3D scanning, parametric modeling, and computational geometry, Neyla flipped the traditional fashion script. Instead of forcing bodies to conform to garments, she made garments that move, grow, and shift with the human form. At the heart of her design is an auxetic structure—an architectural pattern that flexes in sync with the body. “It’s not just about aesthetics,” she explains. “It’s about function, inclusivity, and emotional comfort.”
To bring her vision to life, Neyla needed a material that could stretch, adapt, and biodegrade—without sacrificing comfort. Early prototypes in PLA and TPU lacked the elasticity and sustainability she craved. Then came Balena.Filaflex.
“Working with Balena.Filaflex was a breakthrough,” Neyla says. “It’s soft, it’s strong, and it supports movement close to the skin. But more than that—it’s compostable and biobased. It made the piece not just wearable, but meaningful.”
Balena.Filaflex has already been used in everything from fashion-forward sneakers to performance-ready slides. Designers across the globe—from high fashion to independent creators—are exploring its potential as a circular solution to fast fashion waste.
Co-Creation and Circularity
What sets Neyla’s project apart is the ethos of collaboration—not just between designer and material, but between designer and wearer.
Using open-source design principles, each piece can be tailored by the end user. Pattern density, strap length, and shape flexibility are all customizable. “I don’t want this to be just my design,” Neyla says. “It’s something to be shared—designed by one woman, for all women.”
Neyla is already experimenting with new applications for Balena.Filaflex—from personalized footwear to ergonomic furniture. “Each new project is a chance to learn,” she says. “Balena’s material gives me the freedom to imagine design that’s deeply human and deeply sustainable.”
At Green Prophet, we believe these are the collaborations that matter—where material science meets soul, and where design becomes a tool for regeneration.
