Multi-Functional, Year-Round Weather Protection. The ActiveIce Ubertube is a multi-functional headwear piece for keeping covered and cool in sunny, hot outdoor conditions. An essential for staying cool and protected from UV rays, the ultralight, breathable ActiveIce Ubertube is built with a bluesign approved recycled polyester blend infused with UPF 50+ sun protection. It features ActiveIce technology that actively cools as it wicks sweat away from the head, face, and neck during hot, sunny hikes, long days in the saddle, or high in the alpine, and provides just enough warmth during cold-weather, high-exertion activity. It features a flat seam construction for next-to-skin comfort and a reflective logo for added visibility in low-light conditions. Ultralight, ultra-packable, supremely breathable, and sun-protective, the ActiveIce Ubertube is a sunny outdoor lifestyle staple.