These Women's Thorogood Postal boots with cushioned insoles are a perfect fit for USPS employees and Letter Carriers on their feet for long periods of time! Rugged yet comfortable, this USPS approved boot features a 6" height, waterproof leather, and now has the Soft Streets Dual Density Polurethane outsole for maxium comfort. The Poly-Pillow insole and 400 grams of Thinsulate™ insulation add to the comfort. The USPS postal work boots also feature a waterproof, breathable Sympatex barrier to insure a dry foot.