Caterpillar Ottowa 6" Womens Ankle Boots Leather Rubber sole Heel measures approximately 2.5 inches" This tough and hard wearing ankle boot is a more feminine version of the Colorado which is the classic and original Cat iconic boot Nubuck leather upper for comfort and durability 2.5" chunky block heel T1139 rubber outsole for a tough, durable and reliable outsole 3/4" Goodyear welted ridged rubber outsole delivers essential grip, long lasting wear, strength and durability.