Women's Activeice Spectrum Sun T-Shirt
The ActiveIce™ Spectrum Sun T-Shirt delivers cooling, quick-drying performance with thermoregulating ActiveIce™ technology, UPF 50+ protection, and bluesign® approved recycled materials for high-output days on sunny trails and mountain terrain. Read more
Cooling Tech for Miles Under the Sun
The ActiveIce™ Spectrum Sun T-Shirt keeps you cool and protected through high-output days under the sun. Built for hiking, running, and active pursuits in warm conditions, it balances comfort and performance when the temperature climbs.
Powered by thermoregulating ActiveIce™ technology, it cools as your body heats up, maintaining a steady core temp through long efforts. The lightweight, breathable fabric wicks moisture, dries fast, and delivers UPF 50+ protection. Side slits free up movement, while chafe-free seams and dynamic reach patterning keep every stride and stretch smooth. Made with a recycled polyester blend and bluesign® approved materials for sustainable performance you can feel good about.
Fabric Performance:
- Breathable
- Quick Drying
- Recycled Polyester
- Stretch
- Thermo-Regulating Cooling ActiveIce™ Treatment
- UPF 50+
- Wicking
Design Features:
- Chafe-Free Design with Dynamic Reach
- Interior Center Back Locker Loop
Infinite Guarantee®
Outdoor Research® gear is guaranteed to perform throughout the lifetime of the product.

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