If you want the best fitting Power Stretch Collection, then you're going to love Marker's Program. Marker pays attention to the detail that make the perfect fit! Marker only uses Malden's Power Stretch, the highest quality in the industry for superior breathability, warmth, 4-way Stretch, and wicking properties. The soft fleece inside keeps you warm and comfortable, while at the same time the durable outside surface provides great wind protection.