Ethylene Vinyl Acetate sole Shaft measures approximately 8" from arch Boot opening measures approximately 12" around COMFORTABLE HIGH-QUALITY MATERIAL - Your feet will stay warm and cozy, no matter what winter activities you have planned. Our most classic 8 inch suede boot on our new slimmed down construction with the great fit BEARPAW is known for. COZY SHEEPSKIN & WOOL BLEND LINING: Our 8 inch shaft height Women's Helen Slip On Boot features a sheepskin comfort footbed and wool blend lining that regulates body temperature to keep your feet warm. The sheepskin comfort footbed provides additional softness and reduces foot fatigue. DURABLE OUTSOLE FOR INDOOR & OUTDOOR USE: The BEARPAW Helen's is now available fully insulated with our own HiberTech foil backed 200g insulation. Its durable and lightweight blown rubber outsole makes this women's boot the perfect indoor/outdoor choice. NEVERWET TECHNOLOGY: Treated with NeverWet technology that is designed to withstand up to 40 wash cycles and still provide strong water resistance. This added feature for the elements is perfect for rainy or snowy days!