Pearl Izumi Men's Elite Inrcool Bib Short Fall/Winter 2012 Body: 80% nylon 12% elastane 8% polyester/ UPF 50+Technology: coldblack Weight: 258 g/m2Mesh: 80% polyester 20% elastaneBlack Lower Panels: 80% nylon 12% elastane 8% polyester/ UPF 50+White Lower Panels: 80% polyester 20% elastane/ UPF 50+ You will love it!