The Zephir Bib is a 2-layer stretch, lightweight, and functional bib pant that provides full protection on any line you choose to ride. It includes our brand-new bio-sourced hard shell made from repurposed sugarcane waste that is converted into bio-based polyester. Designed with stretch fabric and lycra at the top, it follows your every move however hard you choose to play. Its DRYPLAY 20K/20K PFOA/PFOS-free membrane and zippered thigh vents provide targeted and extremely efficient temperature regulation; fully-taped seams and waterproof YKK zippers keep moisture out. The always-practical I-Fit System allows you to roll up your cuffs after a great day on snow, and bombproof reinforcements protect these pants from your edges.