Outdoor Research

ActiveIce Spectrum Sun Long-Sleeve T-Shirt - Men's

What Our Gearhead® Experts Are Saying:

"This long-sleeve tee is a must for sunny days on the trail. The ActiveIce™ fabric keeps me cool as I sweat, and the UPF 50+ rating means I don’t have to worry about sunburn. It’s lightweight, breathable, and dries fast—perfect for hiking, paddling, or biking. The thumbholes and side slits add extra comfort and mobility, making it my go-to for full-day sun protection."

When the sun is relentless, we rely on the ActiveIce Spectrum Sun Long Sleeve Tee to keep us cool and protected. Featuring UPF 50+ sun defense and ActiveIce™ technology, this shirt actively cools as we sweat, keeping us comfortable on exposed trails, long paddles, and full-day climbs. The lightweight, breathable fabric wicks moisture and dries quickly, ensuring we stay fresh even in sweltering heat.

Designed for performance, this tee features a chafe-free construction with dynamic reach for unrestricted movement. Side slits at the hem improve ventilation, and thumbholes provide extra coverage and keep sleeves in place. Whether we’re covering miles on foot or exploring open water, this shirt is built for all-day sun protection and comfort.