• "Wins our Editors' Choice Award for Best Sun Hat"

    ★★★★★ OutdoorGearLab

  • "Recommended for Superior Sun Protection"

    ★★★★★ The New York Times Wirecutter

  • "The creme de la creme of sunhats"

    ★★★★★ Gear Patrol

  • "The perfect on-trail companion"

    ★★★★★ Runner's World

  • "Featured in Top Outdoor Gear Picks"

    ★★★★★ Travel + Leisure

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™
  • 5 stars: 42 (81%)
  • 4 stars: 4 (8%)
  • 3 stars: 4 (8%)
  • 2 stars: 1 (2%)
  • 1 star: 1 (2%)
A
Anonymous

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!

A
Anonymous

Nice and light

T
Thomas Rice

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.

K
Ken Kertell

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

A
Anonymous

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

T
Tim Moore

Great caps.

A
Anonymous

Love the adjustable strap and spf!

K
Kacy
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!

R
RanchoRunner
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.

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

C
Capt Becky
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

B
BG
Great running cap.

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

M
Miranda
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.

M
Molly

Great hat, stays on well while running

S
Small head
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.

S
Steph G
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.

C
Carole
Best Hat Ever!

Love this hat! Easily adjusts without being "fiddly." Washes up well & dries quickly. We have been traveling by RV for the padt 6 months & this hat has become a reliable friend - Seriously a little embarrassed at how often I wear it. Im ordering it in black to give my little blue one a break. It is the right weight, can hanfle being cinched down in the wind without making your head hurt. So light I forget Im wearing it. .

C
Capt Becky
Love this hat

Such a great cap. I love the way you adjust it. This is the best I have ever had. Tighten and/or loosen without having to take the hat off. Thank you for finally coming up with a good way to adjust this hat. Material is great also. Light weigh so it’s not hot. I will be ordering more

S
SRS
Aerial Cap

I love the way this hat fits. It's super comfortable. It has some style to it too!

b
baldy
Not for regular outdoor wear.

Adjustable band slips, needs constant adjustment. I sweat and wash my hats regularly. When I washed this hat the sweat stains were still visible. My OR and Tilley hats wash nicely. I definitely would not buy this again, actually I wish I had not bought this one. Size runs large; when hat is adjusted down the shape is changed and and has a more crumpled look.

T
Tom kaszynski
Need more available colors such as yellow and gree

This hat comes down a little farther in my big head than the OR swift caps

L
Lauren

I am on my third hat, won’t wear anything else!

L
Lauren

Hat fits perfectly!

R
Rachelle

Great lightweight cap. Packs well. Super cute!

L
Lori

Perfect Christmas present for my husband for travel as it packs flat!

F
Fred

Love them

B
BoundMom
New cap

I like this cap, it replaces the Impulse cap I lost. I wished the Impulse cap would return too.

C
CJA
Great lightweight hat for adventures and everyday

I’ve been using this hat for several months now and it’s become my go to hat. I love it for hiking with its lightweight wicking fabric. The adjustable band is great because I can easily pull my sun hoodie beneath the cap on windy days to hold it in place. A quick rinse and it’s ready for a day in town. Great hat that I highly recommend

Z
Zuli
Easy to wear cap

Light and comfortable and cute. Fits well while providing sun protection

C
Chris
Light weight and comfortable.

These caps are so light and comfortable that I forget I'm wearing them. I now have them in 4 colors and wear one on almost every sunny day.

S
Sofloguy
Best hat ever

Living in south Florida with super hot and humid weather 6mo’s/yr, this is the best light weight hat by far. Perfectly Fits larger heads too!!. Just bought 5 of these cuz they ran out last summer. No big logo across the front, makes it one step up from typical casual hat. Need more hats like this without giant logo on hat.

O
Outdoors
Best looking light hat

A super light hat that fits great and you’ll barely notice is there.

D
DJ
Best hat ever!

I use this everyday when I walk outside and it's so comfortable and lightweight even in high temperatures. I'm so glad to have the M/L size as I have trouble finding hats that fit and don't end up giving me a headache. I'll definitely be getting the black once it's back in stock, and would also love to see a plain white.

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