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


  • Capilene 4 Expedition Weight Crew long underwear shirt has a soft, stretchy feel, with a smooth face that glides beneath layers
  • Open-grid brushed fleece interior warms your core, wicks moisture and is smooth against your skin
  • Polygiene® permanent odor control resists odors so you can breathe easy after a long day of activity
  • Designed to be long enough to tuck into pants, the droptail hem stays put under a harness
  • Details include articulated, offset-seamed sleeves for complete shoulder mobility and hidden thumb loops to ensure wrist coverage
  • Black color features recycled polyester content; all other colors feature 30% recycled content


View all Patagonia Men's Long Underwear Tops

REI membership


Best Use Multisport
Shirt Style Crew
Fabric (Black) 92% recycled polyester/8% spandex/(other colors) 61% polyester/30% recycled polyester/9% spa
Moisture Wicking Yes
Underwear Weight Heavyweight
Sleeve Length Long Sleeve
Thumbholes Yes
Gender Men's

Size chart

Sizing notes

Inseam varies depending on style. Measurements are stated in inches unless otherwise indicated.