Maximum support mile after mile... These Postal boots are built with a true athletic construction for lightweight durability and flexibility. Men's Reebok Waterproof Boots are a favorite among USPS employees and Letter Carriers because of their comfortable and supportive fit. Made from soft grain leather with drilex moisture absorbant linings. These Postal approved Reebok Waterproof Boots provide extra comfort with an oil, chemical, and slip resistant polyurethane crosstrainer sole. They are 6" Waterproof and Breathable Boots with Fabric. The Lining is MIL-33 Moisture Wicking Lining and 3Bar Knit with Durably Waterproof and Highly Breathable Bootie. It has a Shock Eliminator Heel Cushion. It is 100% Non-Metalllic, Made in the USA, USPS Certified.