Heel Height: Approx. 4'' Tall. 100% waterproof and breathable GORE-TEX liner is engineered to keep your feet dry and comfortable. Danner Trailguard platform provides lightweight, seamless support to provide a roomier fit in the toe box while still offering a snug fit in the heel. Abrasion-resistant toe cap for durability. Speed lace system for a secure, tight fit. Vibram Vicious outsole is oil and slip resistant and has a low-profile 90 degree heel.