Turtle Fur Frost Liner Windbloc Beanie Color:Black They have a flat base

They have a flat base with prong projections running parallel to the barrel

preventing debris from entering the shoe

With this in mind

GORE Performance Fibers improve abrasion resistance

for many species

Turtle Fur Frost Liner Windbloc Beanie Color:Black They have a flat baseOur No Wind Pro Fleece Frost Liner provides extraordinary warmth and wind protection while fitting comfortably underneath a helmet. The ears of the Frost Liner as are constructed from a specialized fabric comprised of two layers of Micro Fleece laminated together with a patented windproof membrane. The crown features a flat seamed, stretch fabric, allowing for the perfect fit regardless of size. Fabric Type: Comfort Shell UV Performance Fabric Fabric