Our bestselling Mach 13 is loaded with ski-built technology, for maximum performance on the mountain’s harshest days. HydroBlock® Pro 15k/15k waterproof/breathable fabric seals water out on downhill runs, while a suite of cold-weather tech works to keep you warm. Thermal Zone Distribution™ mapped insulation combines multiple insulation technologies, and CZV™ - Control Zone Ventilation provides ventilation and prevents overheating. This means the Mach 13 keeps you warm on the coldest days, while still offering the breathability you need. We are also proud to announce that the Mach 13 is now designed with REPREVE® recycled construction, to create an outdoor solution that supports our environment