The women's Sparrow, by Ranger, is a warm pac boot appropriate for wear in winter. This 10-inch lace up boot has a 3/4-inch removable polymeric foam liner and a 200G Thermolote insole for long-lasting warmth and comfort. A TPR shell covers the foot of the boot and is waterproof up to the stitching affixing the upper. Suede leather, in combination with nylon and a faux fur forms the upper of this lace-up, supplying style and an adjustable fit.