Outdoor Research Active Ice Ubertube 91% POLYESTER 9% ELASTANE KNIT NECKTUBE Imported Fabric Performance: Breathable, Lightweight, Wicking, Quick- Drying, UPF 50+, Active Cooling Design Features: Multiple Configurations, Reflective Outdoor Research Logo Functional Details: Flat-Seam Construction, Packable, Crushable Active Cooling Breathable and Lightweight Wicking and Quick Drying Multiple Configurations for Variable Protection Levels