Seirus Thermax Skull Liner
Here's what other sites are saying:
Ideal for cool-weather starts, slip the Seirus Thermax skull liner beneath your helmet or pack it as a minimalist beanie for light and fast adventures.
- REI refers to the men's version
For moisture-wicking comfort that keeps your head dry and warm, wear the Seirus Thermax Skull Liner under your helmet or hat.
Seirus Thermax Skull Liner is made with flat seam construction for comfortable fit. Thin, warm and comfortable.Warm, dry, wicking comfort.Thermax 4-way stretch polyester fabric.Layers under hats, fits under helmets.Reverses to solid black.Avg. wt. 1 oz.Import.