I Saw It First knee high boots feature an inside side long zip making them easy to slip on and off. Resting on a high stacked block heel. Stand tall (and stay comfy) with these daring platform knee-high boots serving major main character energy. Heel measurements: 10cm, Platform height: 3cm. Upper Material: Synthetic Leather. Lining: Textile/PU. Insole: PU. Outsole: Rubber.