Details: Upper material- textile Lining material- textile Sole material- synthetic Fastening type- zip Removable insole- yes The Grenoble 118 boot is lined with warm soft fleece and sits atop a chunky and sturdy sole unit for extra stability and grip during the winter months. Featuring an adjustable toggle to create the perfect snug fit around the ankle and Top-Dry Tex membrane for a guaranteed waterproof boot.