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


  • Quick-drying, sleek and functional fabric wicks moisture while you exercise to keep you dry and comfortable
  • Soft and cozy neck enhances comfort and doesn't chafe
  • Thumb holes keep sleeves in place while your arms are in motion
  • Fabric provides UPF 50+ sun protection, shielding skin from harmful ultraviolet rays
  • The slim, performance fit of the REI Airflyte Mock top enhances workouts with 4-way stretch


View all REI Men's Running Shirts

REI membership


Best Use Running
Shirt Style Mock / Turtleneck
Fabric 82% polyester/18% spandex
Sun-Protective Fabric Yes
Moisture Wicking Yes
Quick Drying Yes
Sleeve Length Long Sleeve
Gender Men's

Size chart

Sizing notes

SHORT: Some pants are available in short sizes, which generally means an inseam that is 2.5 inches shorter than regular sizes. TALL: Some pants, shirts, jackets and parkas are available in tall sizes, which generally means an inseam that is 3 inches longer and a rise that is 1 inch longer, a shirt or jacket body that is 2 inches longer, a parka body that is 2.5 inches longer and sleeves that are 2.5 inches longer than regular sizes.