Call it what you want, the Seirus Snowthing performs exceptionally well in providing sun, wind, and cold-weather protection. This multifunctional seamless knit tube is made of 4-way stretch polyester fabric that's highly breathable, wicks away moisture, and offers incredible UPF 50 protection. The Seirus Snowthing is fully fleece-lined for premium warmth on chilly days outdoors. Unisex design. Imported. One size.