REI Co-op Trailmade Amphib Shorts - Men's

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Color: Blue Nights
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Ever envied a frog? The tough REI Co-op Trailmade Amphib shorts for men will have you hopping in and out of waterfalls, creeks and swimming holes during your hikes.

Location Image of color Blue Nights
Location Image of color Blue Nights


  • "Amphibious" ripstop nylon/polyester blend is snag- and tear-resistant for a high level of durability against sand and scree
  • Durable water repellent (DWR) finish causes water to bead up and roll off
  • UPF 50+ sun protection shields against harmful UV rays
  • Drop-in hand pockets with mesh lining
  • Zippered back pocket
  • Elasticized waistband keeps you comfy when you're moving
  • Pull-on, liner-free design with faux fly and adjustable waistbelt
  • Cord loop at waistband to clip on your sunglasses
  • Field-tested while hiking, fishing and moving around in and out of water across the United States
  • Machine wash cold; do not bleach; tumble dry low
  • 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


View the REI Co-op Trailmade Product LineView all REI Co-op Men's Hiking Shorts

Technical Specs

Best Use




89% nylon/11% polyester

Lining Fabric


Sun-Protective Fabric


UPF Rating


Number of Pockets


Inseam (in.)

6 inches




12 ounces


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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