Inspired by the well-known Baltoro, the all-new Thunder Pro excels for fast, stable movement over rough terrain and multi-day outings with heavy loads. Its strengths are cushioning and stability from the new Active Heel Pad. For rugged travel, a soft collar supports and protects the ankle, while the Vibram Junko Lite outsole with Megagrip compound provides controlled grip on any terrain. The rand protects against rocks and scrub brush while the GORE-TEX Performance Comfort membrane ensures optimal waterproofi ng and breathability in a PFAs-free construction.