Muck Boots Muck Boot Derby Wellington Boot The Derby is a stylish 100% waterproof bootie. The neoprene ankle boot features a breathable liner and extra layers of rubber to ensure all day comfort and protection from the elements. Material Content: Rubber/Neoprene, PK Mesh, Rubber Washing Instructions: Wipe Clean Boots Style: Wellington Heel Height: No Heel Lining: Textile Sole: Other Materials Upper: Other Materials Womens Shoes Fitting: Standard Fully lined with 3mm neoprene for flexibility Hand-laid rubber upper for easy-to-clean durability 3mm Built-in footbed for underfoot comfort Steel shank for structural support Slip-on Chelsea Style Pull-tabs for easy on and off Estimated boot height 17cm/ 6.7" Estimated max circumference 28.5cm/ 11.2" Outsole designed for optimum use on firmer surfaces