Like the windswept rush you get crossing the Willamette River 180 feet above the river, the ripstop polyester fabric with open mesh gives the 835 Tilikum the best airflow a cap can offer. A six-panel construction presents a classic silhouette, while the materialization is as innovative as the pedestrian-only bridge it&';s named after. PRODUCT FEATURES: Ripstop polyester for lightweight durability Open mesh for the ultimate in breathability Silicon print eyelets for a clean, technical look