The ActiveIce Spectrum Sun T-Shirt is built with thermoregulating ActiveIce™ technology, UPF 50+, and bluesign® approved materials, perfect for keeping body temperature in check while hiking, backpacking, climbing, or setting up camp. Outdoor Research® gear is guaranteed to perform throughout the lifetime of the product.

FEATURES

• Fabric Performance

  • Breathable
  • Movement Mirroring Stretch
  • Quick Drying
  • Recycled Polyester
  • Thermo-Regulating Cooling ActiveIce™ Treatment
  • UPF 50+
  • Wicking
  Design Features:

  • 2025 Updated Logo
  • Chafe-Free Design with Dynamic Reach
  • Interior Center Back Locker Loop
  • Side Slits at Hem for Better Movement

   

  bluesign® Approved Materials with Thermoregulating ActiveIce™ For Sunny Days Outdoors

  The ActiveIce Spectrum Sun T-Shirt is built with thermoregulating ActiveIce™ technology and bluesign® approved materials, perfect for keeping body temperature in check while hiking, backpacking, climbing, or setting up camp.

  This tee is built with an ultra-comfortable, breathable, and quick-drying polyester blend treated with our proprietary ActiveIce™ technology. ActiveIce™ reacts to your body's rising temperature by cooling down your core, keeping you in the sweet spot longer while pushing the tempo or working hard. The chafe-free design, built-in stretch, and UPF 50+ are welcome essentials for long days spent under the sun, delivering comfort and maximum range of motion on reachy boulder problems or tight slot canyon squeezes.

  Purpose-built for staying cool while spending long days in the mountains under the sun, the ActiveIce Spectrum Sun T-Shirt is a warm-weather staple for every outdoor enthusiast.

   

SPECS

• Product

  #322485

  Fabric

  bluesign® approved 94% Polyester, 6% Spandex
  

   

  Center Back Length:

  71.1 cm / 28.0 in

  
  
  Weight:

  5.7 oz/ 162 g

  
  
  Origin:

  Vietnam