• OutdoorGearLab

    Wins our Editors' Choice Award for Best Sun Hat

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  • The New York Times Wirecutter

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  • Gear Patrol

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Product Details

Description

Minimalism meets performance in the Aerial Cap. Ultra-lightweight fabrics and construction feel lighter than air, yet somehow still provide UPF 50+ sun protection for those long runs and hikes. When you're going strong, ventilation and wicking keep you cool and dry. Our stretch comfort sizing ensures that hat-induced headache won't sneak up on you and ruin the momentum. Going the distance? Don't forget the Aerial.

Minimalism meets performance in the Aerial Cap. Ultra-lightweight fabrics and construction feel lighter than air, yet somehow still provide UPF 50+ sun protection for those long runs and hikes. When you're going strong, ventilation and wicking keep you cool and dry. Our stretch comfort sizing ensures that hat-induced headache won't sneak up on you and ruin the momentum. Going the distance? Don't forget the Aerial.

Choose Your Hat

UPF Rating
UPF 50+ sun rating (mesh not rated)
UPF 50+ sun rating (includes mesh)
UPF 50+ sun rating (mesh not rated)
Brim
2½" (6.5 cm) pre-curved brim
2¾" (6.5 cm) crushable brim
3" (7.5 cm) folding Clamshell Brim™
Weight
1.9 ounces/53.9 grams
1.7 ounces/48.2 grams
2.2 ounces/62.4 grams
Fabric
100% Polyester body
88% Nylon, 12% Polyester body, polyester crown mesh
100% Polyester body
Packing
Pack with care
Crushable
Brim folds for compact packing
Standout
Strategic crown ventilation
Sunglass Lock™ keeps glasses in place
Convertible Ventilation™

Customer Reviews

4.6 52 reviews Verified
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★★★★★
Anonymous Verified 08/13/2026

Nice and light

★★★★
Anonymous 07/06/2026

Cap is very light and comfortable, looks great and is well-ventilated. Only problem is that I have a large head, so when the grosgrain band is adjusted to fit, there's not enough left over to reach the little belt-loop thing to hold it down, and it ends up flapping freely. Otherwise, a really great product!

★★★
Thomas Rice Verified 07/02/2026

I like the cap but found the sizing strap doesn't remain in position. It's a bit annoying to have to adjust the strap mid run.

★★★★
Ken Kertell Verified 06/23/2026

A tad large compared to 1 fits all, otherwise the same great cap!

★★★★★
Anonymous Verified 06/15/2026

Fits perfectly allow for air circulation adjustable got purple and can easily be seen in a crowd

★★★★★
Tim Moore Verified 06/13/2026

Great caps.

★★★★★
Anonymous Verified 06/04/2026

Love the adjustable strap and spf!

★★★★★
Kacy 12/18/2025

My fav cap!

I purchased this amazing cap through REI. Nowadays, I often wear a cap, and THIS ONE is what I always reach for. I love how securely it fits on my big head: it’s not too tight or constricting. Very comfortable!

★
RanchoRunner 08/29/2025

Once a great hat, now a great fail

Have had one of these Aerial Caps for a few years and it was a great running hat.  But everything about this hat has changed…for the worse.  The bill is considerably shorter and won’t effectively block the sun.  The fit is terrible.  Ordered same size (there is only one size M/L) and it’s like wearing an XL.  The material is thinner than previous hat and doubt it’s 50 UV.  Lastly, previous hat was made in Indonesia; this one comes from Vietnam (does it cost less to make it there?).  This hat is going back.

Sunday Afternoons

Sorry you were unhappy with the Aerial Cap. This hat has historically been made in Vietnam, although this year it has been manufactured at a new factory in which the style changed slightly for the crown but the brim staying the same length. We are working to redevelop this style to match previous production starting in 2026. We test our hats to ASTM test standard D6544 through a certified 3rd party laboratory. Any of our hats marked with UPF 50+ have been tested and pass the rigorous standards to qualify as UPF 50+.,Customer Loyalty Team,clientresponse

★★★★★
Capt Becky 01/15/2025

My all around go to hat

Been wearing this hat for over a year now. It’s so easy to adjust to tighten when the wind is blowing to loosen when the wind calms down

★★★★★
BG 01/05/2025

Great running cap.

Great running cap. Only ask would be for a black on black version.

★★★
Miranda 11/28/2024

Not the best for smaller heads

I'm a female with a 22.5" head circumference, and the M/L ‘one size’ was big on me—both around my head (I had to tighten the back strap a lot), but also the depth; the cap rubs uncomfortably on the tops of my ears and hits the tops of my sunglasses. While this cap is super lightweight, it just doesn't work for smaller heads. I'd love to see it offered in a smaller size. I’d also love to see more earthy feminine colors (ex: mauve) that aren’t too girly like pink/purple.

★★★★★
Molly Verified 06/05/2024

Great hat, stays on well while running

★★★
Small head 04/20/2024

Too large - please make smaller size.

I have 2 versions of this hat.  The first time I purchased (a number of years ago), I thought is was the best cap I ever owned.  Light and well ventilated and fit me perfectly.  A couple of years later, I bought my second cap, however the new cap size is too large for my head (sits on the top of my ears).  Very disappointed with the change and wish company would make a Small/Med sized cap.

★★★
Steph G 04/19/2024

Nice but back strap is an issue

I love how lightweight and breathable it is, but the strap on the back is not very sturdy. It is the correct fit for my head, but I personally like to tighten my hats during hikes. The strap always loosens on its own.

Showing 15 of 52 reviews

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