Oakley - Casing (Brown Sand) - Men's: 600 gram Thinsulate(R) ultra for climate control down to -20 degrees Fahrenheit. Waterproof/breathable Event(R) liner for superior weather resistance and climate control. Top Grain leathers and nubuck for performance comfort and support. Vulcanized rubber outsole with aggressive tread geometry for optimal traction on all surfaces. 2 year warranty on waterproofing.