UPF 50 + SUN PROTECTIVE SLEEVES WITH POCKETS
UPF 50 + SLEEVE WITHOUT POCKETS
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.
Let customers speak for us
Great fit. Awesome features. Love the sleeve!
The sleeve fits great, is very comfortable, and is practical for every day use.
These sleeves are awesome. I can protect my skin from the sun and also have my essentials in one place. Running errands have never been so easy. I totally recommend these, they are worth it!
I gotta say that I have been very impressed with the these sleeves, very comfortable specially when writing my bike.
This sleeve is sleek, durable, and fits perfectly. It offers excellent protection while remaining lightweight and easy to carry. Definitely worth it for anyone looking to keep their device safe in style.
I got my pair gifted to me by my husband. I love it! great to protect against the sun during the summer and good in the gym in the winter to hold my keys and my phone. its comfortable and doesnt budge
You’ve Got Questions. We’ve Got Answers.
ZUN RAYS sleeves are built with serious fabric—a dense 230 GSM knit engineered to block UV penetration, even under stretch.
With fiber-embedded UPF 50+ protection, the defense isn’t applied—it’s built in. That means consistent, long-lasting protection you can rely on, day after day.
This is confidence in motion.With smart pocket storage, reinforced Velcro for heavier items, and flat seams for comfort, style, and durability—these are designs you’ll actually want to wear.