Waterproof construction, cold rated to -11F/-24C, double zip closure, rounded toe, padded collarTextured outsoleApproximate measurements: Heel 1.5"H; Shaft 6.25"H; Opening circumference 12.02"Measurements were taken using a Medium size 9; measurements may vary depending on sizeFit: true to sizeHalf sizes should size upNylon/man-made upper; TPR outsole