Women's Fit Flop Wonderwelly Tall Wellington Boots in black. Natural Rubber Mix upper with adjustable buckle fastening and honeycomb design. Features Wonderwelly Technology and a slip-resistant rubber sole. These boots are waterproof and offer comfort for all-day wear. The round toe shape and regular shoe width ensure a comfortable fit. Heel height is flat (under 2.5cm) and the shoe shaft height is knee-high, making them ideal Wellington boots.