Confidence and comfort are paramount while hiking in the deep cold with the Vasque Lost 40 Insulated Winter Boot for women. Inspired and tested within it's unforgiving namesake of Northern Minnesota, these winter performers will keep your feet plenty warm. Meanwhile the IceTrek compound provides plenty of traction. Dual-zone lacing with Lace Keeper Removable 7mm wool felt boot liner Superior underfoot insulation with Aerogel Thermal Barrier 2mm waterproof suede, Softshell upper Dual-density EVA footbed Internal EVA and Aerogel midsole Vibram® Overland outsole with IceTrek compound Perpetuum last Shaft Height: 12" Circumference: 17.75" (Size 8) Fit: True to Size Insole: EVA Outsole: Vibram® Overland with IceTrek Compound Upper: Suede, Softshell Imported