With fast drying stretch polyester, the Tuner Zip T-Neck will keep you warm and comfortable no matter the task. Features: Stretch polyester with birdseye pattern. YKK® zippers. 221318_620. Materials: 100% Polyester. About Spyder: Founded in 1978 in Boulder Colorado, Spyder is one of the world’s most recognizable and credible outdoor sportswear brands. Focused on enhancing the ski experience both on and off the mountain, Spyder prides itself on its advanced technical composition and style.