Salomon Quest 4D II GTX Hiking Boots - The ALERT Store。Waterproofing: These boots use a GORE-TEX membrane to provide reliable waterproof and breathable protection. Stability: The design includes Salomon\'s 4D Advanced Chassis technology, which guides the foot and provides stability and extra heel support on rough terrain, even when carrying a heavy backpack. Traction: The sole is an All Terrain Contagrip rubber, known for delivering excellent grip and durability on wet, dry, hard, or loose surfaces. Comfort & Fit: They feature a gusseted tongue to keep debris out and SensiFit technology, which cradles the foot for a snug, secure fit.