Columbia Women's Newton Ridge Plus Hiking Boot Leather,Nylon,Rubber Imported Rubber sole Shaft measures approximately 5.25" from arch Hiking boot in waterproof full grain leather featuring Omnishield water and stain resistant treatment and compression-molded EVA foam midsole Triangular D-ring and clamshell lacing; Omnigrip lugged outsole;Techlite Cushioning midsole When comparing to the chart, use the closest larger measurement to determine your size per your countrys standard How to Measure: Place heel against fold/wall on flat level surface.Mark the end of the longest toe with a pen or pencil. Measure both feet and use the larger measurement. Read measurement and compare to size chart.When comparing on the size chart, determine the closest larger measurement and use that number to determine your shoe size for your countrys shoe measurement standard. Hook and loop closure system