Taken from the Sperry website... Product Details: Meet a fall bootie with a little bit of edge. Hear the crunching leaves under a trendy lug outsole, while you maximize comfort and style at the same time with a memory foam footbed. Plus, a water-resistant upper and waterproof rubber duck shell keeps you dry and ready for the season. Water-resistant panels Ghillie webbing lacing system Side zip entry for easy on/off Memory foam footbed Waterproof duck shell Sawtooth rubber outsole with molded Wave-Siping™ technology for enhanced traction Materials: Material Upper: Synthetic Lining Material: Microfleece lining Sole: Sawtooth rubber outsole with molded Wave-Siping™ technology for enhanced traction Features: Duck Boots Round Toe Lug Sole Pull on boot with medial gore and lateral zip for easy entry and secure fit Memory Foam Water Resistant Measurements: Heel Height: 4'' Shaft Height: 9'' Circumference: 30''