See Grass

Reuse. Regrow. Reimagine.


Zeal Optics See Grass frames combine 10% recycled plastics and 30% grass fibers, produced in a closed-loop system. This fibrous base is combined with recycled plastics to reuse waste material and keep it out of landfills. See Grass allows us to create beautiful, durable sunglass frames, each of which is unique, while finding alternative uses for what was previously considered trash and byproducts.*See Grass is produced at a closed-loop German biorefinery where the fibrous grasses are grown and mixed with pre-consumer recycled plastics from healthcare, pharmaceutical and cosmetic applications. The process is powered by a methane turbine that runs on decomposing organic matterand, in turn, creates fertilizer to grow the grasses, without generating any wastewater or byproducts.

See Grass

REUSE. REGROW.REIMAGINE. See Grass combines 10% recycled plastic and 30% grass fibers in a closed-loop system powered by renewable energy to create unique, durable frames that reimagine what sunglasses can be.


Reflected light and UV exposure can cause glare, eye fatigue and sensitivity, all of which disrupt your experience outdoors. Ellume Polarized eliminates 99.9% of glare and blocks 100% of harmful UVA/B rays, protecting against the risk of long-term eye damage.

Ellume Color Filtration

Ellume Polarized Color Filtration revolutionizes the way you see color. This high-purity lens filters specific wavelengths of colors so reds, greens and blues vibrantly pop, enhancing every view. This process eliminates color confusion, allowing you to see the world’s natural colors with greater clarity and contrast with Ellume Polarized.

an infographic showing the closed-loop process of create Zeal See Grass sunglass frames

"I am so stoked on these new sunglasses from Zeal. They always crush it on the sustainability game, but this line takes it to the next level! I love how they are keeping the environment in mind, but they don’t compromise durability or style. Great job Zeal!"

★★★★★ - Julie W.

Shop Calistoga

"It’s not always easy to incorporate sustainable products into your everyday wear, but with the Northwind See Grass frames - Zeal has done just that! Great fit, lightweight, amazing lenses, and to top it off a low environmental impact! Does it get any better?!"

★★★★★ - Sam C.

Shop Northwind

Polarized Plant-Based Sunglasses

Follow The Sun