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A hot-day field journal · WindRider Helios

The day was 94°. He never took the long sleeves off.

A breathable long sleeve built to move air, pull sweat off your skin, and dry before you notice.

UPF 50+ — the highest sun-protection rating · blocks 98% of UV

Read time: 4 minutes · From the people who make gear for Minnesota extremes

★★★★★ 4.81 · 2,177 reviews · more than 100,000 shirts sold

Start with why it feels cooler
Smiling boater in a green Helios long-sleeve shirt on a hot, sunny day on the water
Reader-submitted: a 90°+ day on the water — sleeves down, still dry.

Part 1 · The problem

Cotton holds onto the part you want gone.

A cotton tee can soak up sweat and stay against your back. The hotter the day gets, the more that wet, clingy layer becomes the thing you notice — on the mower, on the water, in the stands, in the yard.

Heat. Sweat. Stick. By early afternoon the shirt that felt fine at breakfast is doing the opposite of its job.

The mistake isn’t wearing a shirt in the heat. It’s wearing a shirt that keeps the heat.

Older man walking a dry sun-baked trail in a Helios shirt
Midday, full sun, no shade in sight — the exact conditions cotton fails in.

Part 2 · The mechanism

Helios gives heat and sweat a way out.

This is the moment the page — and the day — cools down.

Close view of the perforated underarm ventilation panel on the blue Helios fabric
  1. Mesh airflow panels Panels at the sides and underarms let air move through the high-heat zones instead of trapping it.
  2. Moisture-wicking fabric The fabric spreads sweat away from your skin so it can actually evaporate.
  3. Quick dry The construction helps moisture leave the fabric instead of hanging around. 4.6 oz fabric weight per square yard — lighter than the cotton tee it replaces.

Part 3 · The proof

From people who tested it on their hottest days.

“I like these shirts a lot! They are a much cooler option for a long sleeve in Oklahoma summer heat.”
Todd Balcom · Verified buyer
“I wore these at Disneyworld in 97-degree heat. They were cooler than wearing short-sleeve shirts as they kept the sun off the skin.”
David Lafferty · Verified buyer
“I have now bought 4 of these. These are the most comfortable shirts I have — my go-to most every day.”
Richard K. · Verified buyer
100,000+ shirts sold
4.81 ★ 2,177 reviews
UPF 50+ blocks 98% of UV

In a hurry? Skip ahead to colors & pricing

Part 4 · The fair question

“Won’t long sleeves make me hotter?”

That’s the right question. Helios covers your arms from direct sun while its mesh-vented, moisture-wicking fabric is built to move air and sweat instead of holding both against you.

Covered from the sun — and vented where you actually overheat. That combination is why wearers in 90°+ heat keep the sleeves down.

Man in a white Helios long sleeve standing relaxed on a boat in full sun

UPF 50+ · torso + arms to the wrist

Full sun, no shade, sleeves down.

Part 5 · Try it where it counts

The 99-Day Hottest-Day Test

Wear it on the water, in the yard, or wherever your longest, hottest day happens. If it is not the shirt you reach for next time, send it back within 99 days.

  1. Order it.
  2. Wear it on your hottest day.
  3. Keep it — or send it back inside 99 days.
Man in his sixties walking through a sunny backyard in a Helios long-sleeve shirt
Filed under: hot days that aren’t on the water. Same shirt, sleeves down.

Build your order

Part 6 · The decision

· 2,177 reviews · More than 100,000 sold 4.81 out of 5 stars from 2177 reviews

HELIOS Long Sleeve Fishing Shirt in Blue Camo, front view
HELIOS Long Sleeve Fishing Shirt — Blue Camo

Every color · 9 to pick from

  • Blue Camo
  • Grey Camo
  • Mahi Madness
  • Glacial Lake
  • Arctic Spring
  • Black
  • Blue
  • Grey
  • White
Tap a color swatch below to see it on the shirt.
Infographic: a paddler on flat water in the shirt, headlined "Feels like nothing. Protects like armor." Buttery-soft, lightweight fabric with silky-smooth 4-way stretch and full range of motion.
UPF 50+ — blocks 98% of UV rays
Infographic: extreme close-up of the shirt's open mesh knit with water beading on it, headlined "Breathes like nothing else." Strategic micro-ventilation, 25% better airflow than closed-construction competitors.
Mesh ventilation — 4.6 oz fabric
Infographic: fishermen on a dock in the shirt, headlined "Over 100,000 shirts sold," with five stars, 5000+ reviews, and a customer quote from Randall N.: "Coolest shirt I've ever worn. Very well made and love the design."
More than 100,000 shirts sold

$49.95 1 shirt · Buy 3, get 1 free: 4 for $149.85

Choose your pack

4 shirts · $37.46/shirt · $149.85 total · 1 free

Wrong size? Swaps are covered by the 99-day guarantee.

99-Day Risk-Free Guarantee US Family Owned Ships in 24 Hours

Secure checkout · Free shipping on $99+ orders

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Part 7 · The record

2,177 reviews, and counting.

4.81 ★★★★★ average across 2,177 verified reviews.
More than 100,000 shirts sold. Live reviews load here so you can read as many as you want.
★★★★★ · VERIFIED BUYER
“It's cool, it wicks, keeps you cool and dry and it's silky smooth comfortable.”
Matt Riordan, M.D. · Marco Island, FL
★★★★★ · VERIFIED BUYER
“It keeps me cool and wicks the sweat away!”
Victor Exposito · Roslindale, MA

Part 8 · Before you decide

Questions people actually ask.

What if I get the size wrong?
Check the size chart above, and if it still isn't right, exchanges are covered by the 99-day guarantee — send it back or swap the size, no hassle.
Won't long sleeves be hotter than a t-shirt?
Helios covers your arms from direct sun while mesh-vented, moisture-wicking fabric moves air and sweat instead of holding both against you.
What does the shirt actually cover?
UPF 50+ across your torso and arms to the wrist, blocking 98% of UV. For neck, ears and face, pair it with the Hooded Helios and Neck Gaiter.
Does the sun protection wash out?
No — the protection comes from the knit itself, not a coating, so it doesn't wash out over time.
Do I still need sunscreen?
Not where the shirt covers — the fabric is the protection, all day, no reapplying. Skin the shirt doesn't cover (face, neck, ears, hands) still needs sunscreen, or pair it with the Hooded Helios, Neck Gaiter or Sun Gloves.
What's the fabric like?
Our HelioTec™ knit — 92% polyester, 8% elastane. It's a 4.6 oz fabric weight per square yard — not the weight of the finished shirt — so it wears lighter than the cotton tee it replaces, with stretch, moisture-wicking and odor resistance built in.
Can I return it if it doesn't work out?
Yes — every Helios order carries the 99-day money-back guarantee. Love it or your money back: send it back for a refund or swap the size or color, no hassle.
When does it ship, and is shipping free?
Orders ship in 24 hours from Minnesota. Shipping is free on $99+ orders.

Epilogue

Your next hot day is already on the calendar.

UPF 50+ across your torso and arms. 99-day returns. Ships in 24 hours from Minnesota — we know extremes.

Get your Helios
99-day risk-free returns Size swaps covered for 99 days Ships in 24 hours from Minnesota