These boots from Bertie feature suede uppers, with 3 buckles and striking studded straps. A side zip allows for easy access, with the buckles at the calf and ankle for fine tuning the fit. The block heels are 5cm high, providing a welcome boost while maintaining comfortable, everyday wear. Brand : Bertie. Heel Height Information Heel Height: (approx) Flat: <1cm; Low: 1-4cm; Mid: 5-8cm; High: 8+cm : Low. Heel Type : Block. Lining : Unlined. Shoe Material : Suede. Shoe Size : 3. Shoe Style : Calf Boots. Sole : Rubber.