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.
