Giro SPF30 UltraLight Cap

I wear a cap under my helmet on every ride year round. It protects my bald beak from the sun. Also learned my lesson a few years back before I started wearing a cap when I got stung by a bee on the crown of my head on a very steep and fast descent off a mountain climb. Anyway, this cap is super light and breathable. You can easily tilt the brim when you need to without interfering with your helmet fit. The material wicks away sweat unlike the cotton caps. The SPF is a bonus. I look to buy a couple more to keep in my cap arsenal. If you want a cap under your helmet this one is the best I've had so far...and you should see my collection.

This is the first cap I have used for cycling. I wanted something to provide additional sun protection with sunglasses. Love it. Snug fit doesn't affect my helmet. Keeps sweat out of my eyes and great sun protection. Plus I stay cool.

Hands down the best summertime cap.

Ultra lightweight and nearly impossible to feel under the helmet.

Giro really made a great product here. Fits perfectly under my Aeon.

I totally recommend this cap for summertime use.

Cheap enough here to get a couple.

Works perfectly. Like the copy states great for hot summer rides but even in cold, keeps sum out of eyes and stops sunburn through my hair on top of head (through helmet holes).

The cap is okay. Biggest issue are the seams are large so they sometimes and become irritating on a long ride

I wanted a lightweight cap to wear under helmet to keep the sun off my head. This one is perfect!

I wanted a simple cycling hat to help minimize sweat from pouring into my eyes on hot days as well as to provide a little throwback cycling hat style when taking off my helmet at rest stops. This one does the trick. I have worn it on several century rides and found it holds up well and doesn't cause my head to overheat. It is very thin so I have chosen to wash it carefully by hand between rides verses running it through a machine. It drys quickly and has continued to look new.

Great fit, bill doesnt block my vision at all, and it stays cool. Just wish it had more colors.

Love this. Protects my enlarging bald spot from the sun, keeps the sweat out of my eyes, and I don't notice it's there. Also useful for glare. A total winner.

This hat is perfect for rides where a bit of visor coverage is needed. The black color under the bill is much better than white. Love this cap!

I really like this cap. It fits my head well and looks good. I wore it out on a very rainy day and hung it to dry at home. I may have bunched it up, I don't remember, but the bill is a little wrinkled. Not a big deal at all. Just a heads-up. I'm still giving it five stars.

I have been wearing this cap for hot weather road rides and LOVE it- I have worn various color cycling caps under my helmet for years for eye shading and keeping any rain off my glasses. It also absorbs sweat and keeps the helmet padding from getting dirty or stinky. I was initially concerned after ordering the all-white version that the underside of the brim would be white and less helpful for shading sunlight, but it turns out Giro smartly made it black with a small light Giro 'G' logo, and it successfully absorbs some of the ambient daylight light. I like this cap very much for summer use.

I think my traditional cotton caps look a bit better, but nothing tops my Giro cap for comfort. The tech fabric is lighter and stretchier than traditional cycling caps so it feel better under a helmet even on long hot rides.

I don't usually wear caps but I needed something for road biking at certain times of the day when the sun was in my eyes. This cap gave me the perfect size brim that shaded out the sun without blocking my view of the road if that makes sense. I've had other caps where the brim is too big and long and is always obstructing view. This one also happened to fit me perfectly and kept the sweat from dripping into my glasses. Very pleased with it.

This cap is really nice, comfortable and light perfect for the hot weather. It fits me a little tight I'm hoping with the normal use the fabric will stretch out. I recommend it for warm weather.

Good item for those hot, sunny days of Summer. Light, breathable, yet adds protections from those pesky UV rays.

If you don't like the idea of skin cancer, you might want to check this out. This is the third time I've bought this cap. VERY LIGHT WEIGHT, WICKS SWEAT AWAY, WHITE REFLECT HEAT, SPF 30 PROTECTION FROM HARMFUL SUN RAYS. Wash it every 5 or 6 rides and you're good to go for a year or two.

Wicks moisture well. SPF protection is good.

no sunblock on my bald head with this hat. I sweat a lot and not having sunblock and sweat drip into my eyes is great. Plus, I can wear this hat without my helmet.

The fit on my average to slightly-bigger-than-average, and slightly oddly-shaped head (which doesn't always fit all things hats), is really nice. The bill stays up when I flip it up and is comfortable down. It hand washes pretty easily, as well. I love the SPF protection, the simple, presentation (no decals or anything), and its flexibility to be worn in any sort of weather. I like the shorter bill profile, as well. I've tried other name brand hats that are too tight, too colorful, too big in the bill, etc. This hat has been perfect for me.