The all-weather, "one-size-fits-most" Halo Skull Cap is an excellent choice for activities like mountain biking, road cycling and gravel bike riding. During cooler weather, the cap can be adjusted to fit over your ears for warmth and wind protection. This sweat-wicking cap features a breathable, micro-mesh stretch top that provides excellent sun protection with a UPF maximum rating of 50. The Halo Skull cap smoothly fits under helmets. If you're a trail runner, marathoner, triathlete, ultra marathoner or just love to run, this skull cap is for you. It is comfortable, absorbs sweat and channels sweat away from your eyes.

4-way stretch micro-mesh top releases heat for year-round comfort
Patented SweatSeal forms a water-tight seal that channels sweat back and away from the eyes and face
Grip Technology keeps it in place during any activity
Antimicrobial Dryline fabric absorbs sweat, wicks moisture and dries quickly
This under helmet sweat cap will not lose shape, form, or stretch out
Works great under helmets
Stays in place during any activity
UPF rating for white = 35
UPF rating for black, charcoal, star gazer, camo green and camo grey = 50
Hand wash or machine wash cold, hang dry
One size fits most
Made in the USA
One year warranty against manufacturer defects