REI Co-op Flash Shorts - Men's
Fast-and-light adventures? Move freely in these stretchy REI Co-op hiking shorts with a 7 in. inseam. The quick-dry fabric has a durable water repellent and provides UPF 50+ sun protection.




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- Flash hiking shorts perfectly balance weight, durability and function
- Lightweight, 4-way stretch nylon/spandex fabric breathes well and dries quickly
- Durable water repellent (DWR) made without PFAS helps moisture bead up on the surface
- UPF 50+ sun protection
- Roomy hand pockets
- Right hand pocket has an internal stow pocket for a card or key, holding contents closer to your body for less bounce
- Secure, zippered thigh pocket allows you to easily access contents even while wearing a pack with a hipbelt
- Low-profile, pull-on waistband sits comfortably under a pack hipbelt and has an internal drawcord for adjustability
- Waistband uses our breathable, quick-drying and moisture-wicking Swiftland Grid material
- Crotch gusset panel also uses Swiftland Grid material for great venting and moisture management
- Standard rise
- 7 in. inseam reduces weight and takes up less space in your pack on thru-hikes
- Machine wash cold; do not bleach; tumble dry low
- Contains materials that meet the bluesign® criteria
- REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
Imported.
View the REI Co-op Flash Product LineView all REI Co-op Men's Hiking Shorts| Best Use | Hiking |
|---|---|
| Fabric | 87% nylon/13% spandex (bluesign approved) |
| Inner Liner | No |
| Sun-Protective Fabric | Yes |
| UPF Rating | 50+ |
| Quick Drying | Yes |
| Number of Pockets | 4 |
| Inseam (in.) | 7 inches |
| Gender | Men's |
| Sustainability | Contains materials that meet the bluesign® criteria From a Climate Label Certified brand |
| XS | S | M | L | XL | XXL | XXXL | 24 IN Waist | 26 IN Waist | 28 IN Waist | 30 IN Waist | 31 IN Waist | 32 IN Waist | 33 IN Waist | 34 IN Waist | 35 IN Waist | 36 IN Waist | 38 IN Waist | 40 IN Waist | 42 IN Waist | 44 IN Waist | 46 IN Waist | 48 IN Waist | 50 IN Waist | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chest | 35 | 36 - 38 | 39 - 41 | 42 - 45 | 46 - 49 | 50 - 53 | 54 - 57 | |||||||||||||||||
| Sleeve Length | 32 | 32.5 | 33 | 33.5 | 34 | 34.75 | 35.5 | |||||||||||||||||
| Waist | 27.5 | 28 - 30 | 32 - 34 | 36 - 38 | 40 - 42 | 44 - 46 | 48 - 50 | 24 | 26 | 28 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 |
| Hip | 33.5 | 34.5 - 36.5 | 37.5 - 39.5 | 41 - 43 | 44 - 46.5 | 47.5 - 50.5 | 51.5 - 54.5 | 32 | 33.5 | 34.5 | 36.5 | 37 | 37.5 | 38.5 | 39.5 | 40.25 | 41 | 43 | 44 | 46.5 | 47.5 | 50.5 | 52.5 | 54.5 |
| Inseam | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated. Size chart values represent body measurements, not garment measurements.
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.
Inseam is measured to the floor.
Better gear is built together
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.


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