Columbia Youth Minx Slip Omni Heat WP Winter Boot (Little Kid/Big Kid) 100% Synthetic Textile/Faux Fur Collar Made in USA or Imported Rubber sole Shaft measures approximately 8.5" from arch Boot opening measures approximately 10" around Waterproof woven synthetic textile with faux fur collar and tongue lining Omni tech waterproof breathable seam sealed membrane bootie construction 200 grams insulation, rated -25 Fahrenheit and -32C Omni-heat reflective lining