The Ella Chelsea Duck Boots from Universal Thread™ blend function and fashion to help keep your feet warm and dry no matter where you fly. To make it easy to put on and take off, we added dual elastic gores and a side zipper. The 2-inch block heel makes these duck boots fashion-forward so you can wear them for more than just a walk in the park. Fit & style Universal Thread duck boots are an equal blend of functionality and fashion Dual elastic gores and side zipper for easy on and off Solid-color boots pair with a range of outfits 2in block heel adds a cool, on-trend vibe Footwear Lining Material: Man Made Materials Construction: Memory Foam Insole Footwear Insole Material: Polyurethane Features: Zipper Footwear Upper Material: 61% Polyester and 38% Polyurethane and 1% Zinc Alloy Footwear Outsole Material: 100% TPR (Thermoplastic Rubber)