About Zun Rays
At ZUN RAYS, EVERYTHING BEGINS WITH AWARENESS
Celeste’s foundation is rooted in radiology—a field built around what cannot be seen with the naked eye. A graduate of the Johns Hopkins Radiology Program in Baltimore, Maryland, and holding a Bachelor of Science in Radiologic Technology from the Oregon Institute of Technology, her work is centered on understanding invisible elements—measuring, interpreting, and respecting what is often overlooked.
That perspective shapes a heightened attention to detail and reinforces a core belief: protection is not optional—it is essential.
That same awareness extends far beyond the clinical setting.
Countless hours spent in the sun—on long walks, near the water, and across some of the world’s most intense landscapes—have shaped the vision behind ZUN RAYS.
From the coastal brilliance of Spain to the warmth of Morocco and the relentless intensity of the Sahara Desert, the sun reveals both its beauty and its power. These experiences highlighted a gap: while much of life is carefully prepared for, consistent daily exposure is often underestimated.
ZUN RAYS was created to answer that need.
Designed at the intersection of science and lifestyle, each piece reflects Celeste’s commitment to precision, performance, and refined simplicity. Cooling comfort, mild compression, and UPF 50+ protection are seamlessly integrated into a design that supports movement without compromise. The result is protection that feels effortless
This is not about fear. It is about awareness.
This is for the thousands of people who unknowingly begin their daily journey in the sun. We want to be the company that cares for you and helps you understand that small actions—like covering your arms—add up to meaningful differences over time.
Because the sun isn’t new. But how we respond to it should be.
ZUN RAYS
Be Your You
Why Choose Zun Rays?
The Benefits of Zun Rays
We’ve thought of everything so you don’t have to. Here’s how our arm sleeves keep you covered, literally and figuratively:
Quick Hits: SPF vs. UPF ⚡
- SPF (Lotion): Mostly blocks UVB (the "burn" rays). It wears off, washes off, and is usually applied too thin.
- UPF (ZUN RAYS): Blocks both UVA (the "aging/wrinkle" rays) and UVB (the "burn" rays). It doesn't wash off, doesn't need re-applying, and covers you literally.
The ZUN RAYS Bottom Line: Lightweight, cooling, and patent-pending storage—all wrapped in a fabric that doesn't "thin out" when life gets active. Covered. Literally.
Power combo Fabric RPET Chito + Spandex ♻️
We didn't just pick any fabric. We chose a high-performance blend that protects the planet and your skin.
Our Secret Sauce (Z-Composition):
- Polyester is naturally gifted at deflecting UV radiation. By using high-density recycled yarn, we’ve engineered a microscopic "armor" that acts as a physical barrier. Instead of letting the sun’s energy reach your skin, our RPET fibers bounce and scatter UV rays away from your body, keeping you cooler and safer.
- 21% Spandex: This provides
memory." It ensures the sleeve snaps back to its original shape, keeping the weave tight and your protection at UPF 50+
(blocking 98% of rays).
The "Stretch Test": Not All Sleeves are Equal 🧶
The Scary Science: When standard fabrics stretch, the "pores" between the threads open up. A regular UPF 50 Sleeve can drop from UPF 50 down to UPF 8 just by pulling it over your muscles! That’s like wearing a screen door for protection.
How ZUN RAYS Wins: We engineered our fabric specifically for movement. While other weaves lose up to 20% of their protection the moment you move, ZUN RAYS holds on tight. Our dense knit stays "closed," keeping that UV light out even when you're at full extension on the golf swing or mid-stride on a run.
Our Team
Celeste
Founder of Zun Rays
Celeste set out to create arm sleeves that weren’t just functional but full of personality.
Rachel
CEO of "Unmarked Street"
Certified Project Management Professional (PMP). She has been instrumental in helping through road blocks, and creating project flow.
Jessica
Lead Product Developer at "Unmarked Street"
Making the vision real for our performance Sleeves.
Alejandro
Freelance photographer
Essential at taking the "on the move" photographs for Zun Rays.
Bethie
Inventory and Financial Specialist
Playing a crucial role in Zun Rays financial strategy, overseeing the cost of goods, materials, and inventory to ensure efficiency and profitability.
Eco-Friendly by Design
Sustainability
At Zun Rays, we believe that protecting yourself and protecting the planet should go hand in hand. That’s why we’ve committed to using recycled materials in every sleeve we make.
By repurposing materials, we’re reducing our environmental footprint. We want to give you a product you can feel good about wearing. It’s sustainable, stylish, and built to last—because looking good shouldn’t cost the earth.
Made in the USA.