Stylish and eco-friendly, the 3-layer stretch Aeron Bib perfect match with Aeron jacket. It offers targeted lightweight breathability for a high-intensity ride. It includes our brand-new bio-sourced hard shell made from repurposed sugarcane waste that is converted into bio-based polyester.It also features a 20K/20K membrane for unmatched waterproof/breathable performance and a Teflon EcoElite® PFC-free durable water repellent treatment. The straight fit follows your every move. Fully-taped seams and waterproof YKK®zippers keep moisture out and silicone bombproof reinforcements protect these pants from your edges.