Stretch fabric upper with partially recycled linings and top cloth with a round toe Side zipper, 3.15 inch boot height, 9.61 inch leg circumference. Ultra Lightweight: Step lightly with a nearly weightless feel. BLOOM materials: Eco-conscious algae-infused foam layer under the insole BZEES Cloud Technology: Designed so you’ll feel weightless, energized and free Dynamic Stretch Fabrics: Move freely in shoes with built-in stretch