Outdoor Research Swift Ultra Light Cap
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Pushing the pace in the alpine or on the road? This Outdoor Research cap is the ultimate lid for trail running and other hard efforts. The hybrid-mapped, ultralight design gives you max ventilation.
Shop similar products- Made with an ultra-breathable, bluesign®-approved polyester blend on the top of the crown and 100% recycled polyester on the side panels
- Durable water repellent (DWR) finish and UPF 30 protect from the elements
- Drawcord closure at the back delivers a secure, adjustable fit
- Just the right amount of movement-mirroring stretch provides a precision fit and all-day comfort
- Designed to be crushable and packable to stuff into pockets and packs
- Breathable, wicking, quick-drying and ultralight
- Water-resistant
Imported.
View all Outdoor Research Men's Ball CapsBest Use | Trail Running Running |
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Hat Style | Ball Cap |
Fabric | Top panel: bluesign-approved 88% polyester/12% spandex; side panels: bluesign-approved 100% recycled polyester |
Sun-Protective Fabric | Yes |
UPF Rating | 30 |
Moisture Wicking | Yes |
Quick Drying | Yes |
Visor/Brim | Yes |
Length of Bill | 2.6 inches |
Gender | Unisex |
Sustainability | Contains materials that meet the bluesign® criteria Contains recycled materials |
S | M | L | XL | S/M | L/XL | One Size | |
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Head Circumference | 21.5 - 21.75 | 21.75 - 22.5 | 22.5 - 23.25 | 23.25 - 24 | 21 - 22.5 | 22.5 - 24 | 21 - 24 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated.
Measure around your head where the headwear would fit comfortably.
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Perfect
Hat is super light and packs nicely in your pocket if need be. The brim is pretty flimsy, which makes it not so great for casual biking or strong winds. Not enough of an issue to give 4 stars.

Bad stitching in back and useless floppy brim/bill/peak.
Pros: Hat size and stretch are great. Drawstring toggle at rear. Vented/perforated panels on sides are great. Cons: Poor stitching on the back has loose threads all over right out of the bad and the brim is completely floppy and sags down, it is not reinforced internally. It is not curved like in the photo. The brim is made from a stretchy material that feels like a rubber belt. It cannot be curved into shape that will hold like a baseball cap. While running, it flops all over, it's a completely superfluous flap of the heaviest material on the cap.
Love at first wear.
I have searched the globe for the perfect hat, and this is now my go-to number one! The flexible and soft brim is fantastic, and the high-quality material is soft to the touch and cooling to wear. It fits like a glove on my head, offering both comfort and style. Not only is it functional, but it also looks great. Highly recommend!
The best parts of running with a hat and not, all at once
This hat is insanely light weight. I spent all of this past summer running with it and it keeps the sun off my face and sweat out of my eyes, while perfectly managing heat. I've tossed it in the laundry after almost every run, and it still looks brand new.
packable and light weight
I purchased this for using while running and it has addressed my needs perfectly. Lightweight, packable and just enough of a bill to keep the sun out of my eyes during those early morning runs. I have a larger head and these xl OR hats always fit great.

The Standard
Light, breathable, and lasts a heck of a long time. Good for running, outdoor activities, and daily wear.

cool hat
Cool hat great for photography