Columbia Women's Rainey Tall Rain Boot 100% Rubber Made in US Rubber sole Shaft measures approximately 11.5" from arch Heel measures approximately 1.25" Platform measures approximately 0.5 inches Boot opening measures approximately 14.75" around Riding-inspired rain boot with high-gloss rubber upper, high/low collar, and treaded outsole One-piece, phthalate PVC upper Internal molded EVA sock liner Aggressive tread to ensure superior grip in all outdoor environments