It's a beanie it's a balaclava it's a face covering! The multi-functional ActiveIce Ubertube wicks away perspiration in summer heat and provides just enough warmth during cold-weather high-exertion activity. Complete with ActiveIce technology this neck gaiter uses xylitol crystals to actually cool you as you sweat. It can be used for so many things it'll soon become a staple piece of gear on every one of your adventures.. . . . . ActiveIce 92% polyester 8% spandex. Thermo-Regulating Cooling. ActiveIce Treatment Active Cooling. Breathable. Lightweight. Wicking. Quick Drying. UPF 50+. Multiple Configurations. Reflective Logo. Flat-Seam Construction. Packable. Crushable.