From SAS, the Gretchen Water Resistant Leather Lace Up Booties feature: Water Resistant Leather Upper: Genuine, sturdy leather has been treated in our factory to resist the absorption of water and keep your foot dry. lace up closure synthetic lining SAS CoolSTEP™ Footbed: An anti-microbial material wicks moisture away from the foot and helps reduce friction that can cause heat buildup. This footbed cups the heel for a more stable and comfortable walking experience Water resistant leather and the SAS X-Tra Grip Sole™ helps provide protection from slipping. TRIPAD® Technology, a CoolSTEP™ footbed and soft genuine leather provides comfort to last the day removable footbed TRIPAD® Technology: Comfort system that provides shock-absorption and support to the three main pressure points of the foot: inside ball, outside ball and heel SAS X-Tra Grip Sole™: The SAS X-tra Grip Sole® has outperformed industry standards using the Brungraber Mark II testing method for wet and oily conditions. The unique hexagon shape rubber outsole pattern helps to channel floor spills to maintain effective contact with floor surfaces and is non-marking. Our polyurethane midsole is a lightweight and flexible component that provides comfort without compromising support Medicare Approved: This style has met the standards set by Medicare. Please see your doctor for details and qualifications. Approx. 1.25" heel height Made in the USA.