The North Face Women's Ice Queen Boot Synthetic Shaft measures approximately 8.5" from arch Shaft Height: 8 1/2" (size 6 1/2) Circumference: 12 1/4" (size 6 1/2) Fit: This style tends to run narrow. For an accurate fit we recommend purchasing a 1/2 size larger than you typically purchase. For example, if you normally purchase a size 7, we recommend purchasing a size 7 1/2. Insole: EVA Outsole: Rubber