Vivobarefoot Men's Off Road Hi Hiking Boot 100% Leather Imported Rubber sole Shaft measures approximately 5.25" from arch Heel measures approximately 0.5" Boot opening measures approximately 15" around Hydroguard waterproofing V-web stitchless lamination upper Adjustable circumference Breathable Hex Mesh lining Stay dry and protected while maintaining a barefoot feel in this ankle-high hiker from Vivobarefoot.