Last: 100mm; Flex: 110; g/MP 26.5: 1990; Shell: Infrared PU; Cuff: Infrared PU; Soles: 5355 Alpine High Traction; Liner Type/Style: 3D Performance Fit Primaloft; PrimaLoft insulation: Keeps feet warm, Keeps feet dry; Infrared Technology: Precise Custom Fi