The Trail Series with the easy-to-use Quick-Cinch™ binding holds the boot securely while the Virtual Pivot Traction system and step-nesting shape offer a more natural stride. High quality materials and ergonomic design make Trail ideal for the casual hiker wanting superior, reliable performance. Women's Trail specifically contour to match a woman's stride. The ergonomic design of the women's Trail model uses a lighter frame, deeper contour shape, and modified binding. 6063 Aluminum USA-built frame.