• 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.

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.

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).

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.

• The Essentials:
• Machine wash cold with similar
  colors
• If your sleeve has top Velcro,
  fasten it to itself before washing (no snag drama)
• Hang to dry for best results

Pro Tips to Keep Them Peak-Performing:

• After swimming, give them a quick
  rinse (chlorine + salt aren’t their friends)
• Skip harsh detergents, bleach,
  and fabric softeners—they can break down UV protection
• Air drying is best; high heat can
  weaken performance over time

Why This Matters:
UPF protection can fade when fabrics are overworked—through heat, friction, or harsh chemicals. But here’s the difference:

Real Talk (We Didn’t Even Tell You This):
We’ve put these sleeves through serious testing—full loads, regular cycles, even the dryer. After countless washes, they still hold their shape and color like pros.

Still, treat them well… and they’ll keep showing up for you.

We want you to love your ZUN RAYS product the moment you put them on. If something doesn’t feel quite right, no stress—we’ve got you.

Just share your Order number/Full Name or confirmation email to beyou@zunraysclothing.com

Subject line RETURN or EXCHANGEwhen you reach out—
We will send you a Pre-Paid Shipping Label

• Items should be unworn, unwashed, and in original condition
• include original packaging
• If Exchange, tell us style and size you want
  Send your item back, and once we receive it, we’ll take care of the rest
  

A Few Quick Notes:

• Return shipping is handled by the customer unless something arrived damaged or incorrect
• exchanges are shipped after we receive your return
• Final sale items aren’t eligible for return or exchange

Shipping

Shipping is calculated at checkout, with free shipping on orders over $79.

We move fast—most orders ship within 1 business day. Please allow 1–2 business days for processing (Monday–Friday, excluding holidays).

Our goal? Get your ZUN RAYS sleeves to you quickly—so you can get back to sun-filled days, fully protected and ready to move.

Think of your Zun Rays sleeve like your favorite pair of leggings—snug but never suffocating.

The sleeve should hug your arm just enough to stay in place and keep your must-haves (like your lip balm, credit card, or lucky golf tee) right where you need them.

💡 Pro tip: The top band should feel secure but comfy—no digging, no slipping, just smooth support.

Our fabric? Oh yes, it's been put to the test. It’s soft, breathable, and built to last through long walks, long flights, and long brunches. You’ll forget you're even wearing it... except when you realize your essentials are exactly where you left them.

✨ The secret sauce? Use our custom size chart to get that just-right fit: snug, not loose… and definitely not tight.