REI Co-op Junction Bike Shorts - Men's

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Color: Black
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Streamlined, stretchy and sweat-wicking, the men's REI Co-op Junction bike shorts cushion the saddle with an Italian chamois and up their game with stretch drop-in pockets on either thigh.


  • Recycled polyester/spandex fabric blend offers 4-way stretch for ease of movement
  • Moisture-wicking fabric keeps you dry and comfortable
  • Italian chamois gives you comfort for hours in the saddle
  • Drop-in stretch pockets on both thighs can carry your phone, ID, snacks or other small essentials
  • Internal grippers keep shorts legs in place
  • Flatseam waistband constructed for comfort
  • Reflective accent on the back of the left leg adds visibility in low light
  • REI is Climate Neutral Certified; as we work to actively reduce our footprint, we measure annual carbon emissions and purchase an equivalent amount of verified carbon credits
  • Contains materials that meet the bluesign® criteria


View the REI Co-op Junction Product LineView all REI Co-op Men's Bike Shorts

Technical Specs

Best Use

Road Cycling

Bike Short Style



78% recycled polyester/22% spandex (bluesign® approved)

Pad Type

Standard Chamois

Moisture Wicking


Inseam (in.)

9.5 inches






Contains recycled materials

Contains materials that meet the bluesign® criteria

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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