Description
What Our Gearhead® Experts Are Saying:
“This shirt is a game-changer for full-sun days. The ActiveIce treatment is legit—I actually feel cooler as I heat up. It dries super fast and has a smooth fit that doesn’t ride up or chafe under a pack. I bring it on every summer trip.”
We don’t back down from heat—we dress smart for it. The Outdoor Research ActiveIce Spectrum Sun T-Shirt is our top pick for long days in sun-scorched environments, offering cooling performance, UPF 50+ protection, and moisture-wicking power all in one sleek package. Whether we’re charging up ridgelines or grinding out desert miles, this shirt helps us keep our cool.
Powered by thermo-regulating ActiveIce™ technology, the fabric actively cools as we sweat—keeping us comfortable even when the sun is relentless. The recycled polyester blend stretches with us and dries quickly, while the chafe-free seams and dynamic reach design allow for smooth movement under packs or while scrambling. It’s built for high output in high heat.
Details
Cooling sun shirt for hiking, trail running, and high-exertion days in the sun
UPF 50+ rated fabric provides maximum sun protection
ActiveIce™ technology cools the skin as you sweat
Breathable and moisture-wicking recycled polyester
Stretch construction for full mobility during high-output use
Chafe-free seams and dynamic reach design for active comfort
Quick-drying performance ideal for extended wear in heat
Locker loop at the back for easy hang-drying at camp or on the go
