Cascade Mountain Mgmt. Corp. Portage is an official retailer for Dynastar and Lange, based in Portage. Dynastar and Lange are two of the most respected names in high-performance skiing, offering skis and ski boots engineered for precision, comfort and on-mountain versatility. At Cascade Mountain Mgmt. Corp. Portage, you will find a carefully selected range of Dynastar skis — designed for all skill levels and snow conditions — alongside Lange ski boots, renowned for their performance fit, responsiveness and all-day comfort. The team at Cascade Mountain Mgmt. Corp. Portage is on hand to help you find the right equipment to match your skiing style and ambitions.