90% Polyester, 10% Spandex
SPECIAL REMIND：According to customers’ feedbacks, if your head circumference is larger, the hat may be a little tight, please purchase with caution./Elastic closure
SUPERIOR FABRIC PERFORMANCE：The cycling skull cap is designed to provide you with a warm and comfortable experience, while the lightweight material can quickly wick away sweat.
HELMET LINER：Elastic and light materials make the thermal cap fits under bike helmets, fishing hats or other outdoorsy headgear, providing double protection and warmth.
PERFECT FOR WINTER SPORTS：The helmet liner skull cap is suitable for cycling, football, running, motorcycle, hiking, skiing, jogging, training, skating and other multiple winter sports.
ONE SIZE FITS ALL：With the stretchy fabric, the biking running cap is perfect for both men and women. An expandable hole in the rear to fit a pony tail.
This BALEAF winter thermal skull cap for men or women, is the best choice for Thanksgiving and Christmas gifts.