The North Face Thermoball Versa Chukka Shoe - Men's Other Waterproof, BLC-compliant, full-grain leather upper with ballistic-mesh heel and tongue details Waterproof construction PrimaLoft ThermoBall synthetic insulation in the collar coupled with 100 g PrimaLoft Silver Insulation throughout the vamp Rubberized hardware OrthoLite ReBound footbed