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Overview

Is the Halo Skull Cap the Best Under-Helmet Option for Cyclists?

If you want sweat control and sun protection without any bulk under your helmet, the Halo Skull Cap is the answer. The 4-way stretch micro-mesh top fits smoothly under any lid and provides serious UV protection, UPF 35 in white and UPF 50 in black, charcoal, camo grey, camo green, and Star Gazer. Halo's patented SweatSeal® channels sweat away from your eyes so you can stay focused on the ride, not what's dripping into them.

In cooler weather, the sides fold down over your ears for wind protection and added warmth, making it genuinely useful year-round. Grip Technology keeps it locked in place, and antimicrobial Dryline® fabric wicks moisture and dries fast. One size fits most. Machine wash cold, hang dry. Made in the USA with a one-year manufacturer warranty.

Halo Skull Cap - Camo Grey Halo
Halo Skull Cap - Star Gazer Halo
Halo Skull Cap - Camo Green Halo

All the specs

Coverage
Full skull cap, fits snugly from forehead to the back of the head
Fit
One size fits most, 4-way stretch micro-mesh construction
UV Protection
UPF 35 (white) / UPF 50 (black, charcoal, camo grey, Star Gazer)
Cold weather
Sides fold down over ears for wind protection and warmth
Technology
Patented SweatSeal® + Grip Technology
Care
Machine wash cold, hang dry
Origin
Made in the USA (San Diego, CA, Halo Headband since 2001)
Warranty
One-year manufacturer warranty against defects

FAQ

Good questions

Get to know Halo

There's more to Halo than this one product. Our Halo page has the full Halo lineup we carry and more about the brand.

Visit the Halo page →
Does the Halo Skull Cap fit under a road or mountain bike helmet?

Yes, the 4-way stretch micro-mesh is thin enough to fit cleanly under any cycling helmet. It conforms to your head shape and won’t create pressure points or bunching against your helmet pads. Many cyclists wear it year-round as their standard under-helmet layer.

Does it work for bald or shaved-head riders?

It’s actually one of the top choices for bald riders. The full coverage protects your scalp from UV rays and wind, and the SweatSeal® channels sweat away from your eyes just as effectively without hair. Many bald cyclists prefer the Skull Cap over a headband for exactly this reason.

Can you wear it in cold weather as well as warm weather?

Yes, that’s one of its best features. In warm conditions it works as a lightweight sweat-managing layer under your helmet. When temps drop, the sides fold down over your ears for wind protection and added warmth. It’s genuinely a year-round piece.

Reviews

What riders say about the Lab

4.9 ★★★★★ 119 Google reviews of Dialed Cycling Lab Read all reviews on Google ↗
“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
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“Fantastic store. It has everything you may want/need for cycling. Great team. Highly recommend to anyone looking for cycling related things and bike service.”
Google review
“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
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