Superior Boot Co. Women's Pull-on Duck Leather Lug Sole sole Shaft measures approximately 7.5 from arch Boot opening measures approximately 12 around Shaft Height: 7 1/2" (size 6) Circumference: 12" (size 6) Fit: This style is available in whole sizes only and tends to run small. If you normally order a 1/2 size it is recommended that you order the next full size up. For example, if you normally purchase a size 6 1/2 we recommend purchasing a size 7. Features of this item include: Cambrelle, Insulated, Outdoor, Thermolite, Waterproof, Winter