The single layer Comfort Shell Totally Tubular Lightweight Neck is lightweight, performance, multi functional headwear. Comfort Shell is a Turtle Fur proprietary performance technical fabric that is the perfect blend of moisture management, antimicrobial and lightweight element protection. It's engineered to support a demanding multi season active lifestyle, with the softness of a brushed inside for that unique Turtle Fur next to skin softness. Single layer Comfort Shell performance fabric provides lightweight warmth and element protection. UPF 50 sun protection blocks 97% of UV rays Anti microbial and moisture wicking. Brushed inside for next to skin comfort. Perfect for hiking, skiing, snowboarding, tailgating, and sporting events. One size fits most.