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  • Merino wool wicks away moisture, dries quickly, breathes to regulate temperature and resists odors naturally
  • Fabric offers protection from UV light with a rating of UPF 50+
  • Raglan sleeve construction allows unhindered shoulder movement and flatlock seams reduce chafing
  • The men's Icebreaker Everyday half-zip long underwear top has a slim fit
  • Machine washable; line dry or dry flat in shade


View all Icebreaker Men's Running Shirts

REI membership


Best Use Multisport
Shirt Style Zip-front
Fabric Merino wool
Sun-Protective Fabric Yes
UPF Rating 50
Moisture Wicking Yes
Quick Drying Yes
Underwear Weight Lightweight
Sleeve Length Long 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.