REI Co-op Groundbreaker Fleece Jacket 2.0 - Men's

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Some gear only gets used twice a year, and that's fine, but the men's REI Co-op Groundbreaker fleece jacket 2.0—upgraded with a trimmer fit and finer fleece—is gear you'll want to use every day.


  • Plush, durable and now slightly lighter 2.0 fleece is comfortable year-round—wear it alone in cool weather, layered in cold
  • Shoulder seams are rolled forward to prevent chafing under pack straps
  • Zip hand pockets secure your valuables
  • Stretch binding at cuffs and waist keep cold out, warmth in, cold out


View the REI Co-op Groundbreaker Product LineView all REI Co-op Men's Fleece Jackets

Technical Specs

Best Use




Fleece Weight






Back Length


Back Length (in.)

28.5 inches




From a Climate Neutral Certified brand

Size Chart

XSSMLXLXXLXXXL24 IN Waist26 IN Waist28 IN Waist30 IN Waist31 IN Waist32 IN Waist33 IN Waist34 IN Waist35 IN Waist36 IN Waist38 IN Waist40 IN Waist42 IN Waist44 IN Waist46 IN Waist48 IN Waist50 IN Waist
Chest3536 - 3839 - 4142 - 4546 - 4950 - 5354 - 57
Sleeve Length3333.53434.53535.7536.5
Waist27.528 - 3032 - 3436 - 3840 - 4244 - 4648 - 502426283031323334353638404244464850
Hip33.534.5 - 36.537.5 - 39.541 - 4344 - 46.547.5 - 50.551.5 - 54.53233.534.536.53737.538.539.540.2541434446.547.550.552.554.5

Sizing Notes

Measurements are stated in inches unless otherwise indicated.

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.

Capri or cropped pants have an intentionally shorter inseam—reference the technical specs instead of this chart.

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