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This product is no longer available, but don't go just yet.


  • Lightweight merino wool with nylon fabric offers excellent durability and a smooth surface
  • Fabric wicks moisture and dries quickly; UPF 50+ sun protection shields skin from harmful ultraviolet rays
  • Mesh underarm and back panels ventilate to enhance comfort
  • Reflective logo; flatlock seams; machine washable
  • The Icebreaker Aero T-Shirt for men offers a slim fit


View all Icebreaker Men's Running Shirts

REI membership


Best Use Running
Shirt Style Crew
Fabric 90% merino wool/10% nylon
Sun-Protective Fabric Yes
Moisture Wicking Yes
Quick Drying Yes
Sleeve Length Short Sleeve
Gender Men's

Size chart

Sizing notes

Measurements are stated in inches unless otherwise indicated. CHOOSING THE RIGHT SIZE: If your body measurements are midway between two sizes, select the smaller size for a tighter fit or the larger size for a looser fit. If your body measurements result in different sizes, we recommend using your chest measurement for tops and your hip measurement for pants.