Sorel Women's Snow Angel Zip Boot 100% Exterior: Suede. Liner/Trim: Synthetic Fleece Rubber sole Shaft measures approximately 6.5" from arch Heel measures approximately 1.5" Platform measures approximately 0.5" Boot opening measures approximately 8" around Thinsulate lined, temperature rated to -25 degrees Fahrenheit Seam sealed water resistant construction Locking front zip entry Fully fleece lined premium interior Removeable EVA comfort footbed