The New Chaco Women's Z/2 Unaweep has and adjustable toe loop that adds extra measure of security. FEATURES: Sculpted heel riser provides foot stability and greater heel-side comfort. Functionality in all types of terrain. Strap width is ¾ inches. Chaco Biocentric Footbed provides support and all day comfort and controls pronation. Easy cleaning. Added toe loop for extra measure of security. Unaweep sole. Sleek Polyurethane footbed is light and flexible