Heel Height: Approx. 8'' Tall. Designed for speed and constructed for stability, the Torrent is built on our lightest weight and most versatile TFX platform, the Danner TFX-8. The custom Vibram Torrent outsole features a pentagonal pivot point lug pattern for grip in all direction, while the speed lacing system and side-zip ensure a fast and secure fit. 100% waterproof and breathable GORE-TEX lining.