I've only worn these a few times. I inspected them, and there's some wear on the edge of the heel, but otherwise, they are in good condition with no other noticeable issues. The exterior is nylon, not synthetic leather. Wide and roomy 4E waterproof strap pumps <3.5cm heel> 【21.5cm～25.5cm】 FR-4002 fuwaraku "For working women!" These shoes support women who stand or walk a lot, from the ground up. Because you wear them every day, we've focused on comfort. Comfort pumps that gently wrap your entire foot. The uppers are waterproof, so you can wear them even on rainy days. The insole's toe area uses "Medier," a high-performance material from Kuraray, for a smooth feel. They are also antibacterial and deodorizing, and have excellent sweat-wicking and quick-drying properties, keeping the inside of the shoes comfortable. These are recommended for both office and casual settings. *Not completely waterproof. 【fuwaraku】 A brand that supports working women with a "soft" and "comfortable" fit. You can choose the perfect pair of basic black pumps based on size, width, heel height, and toe shape. They also offer a series of boots and other styles. ■Upper (surface material): Synthetic fiber ■Heel height: Approximately 3.5cm ■Sole (outer sole): Synthetic sole ■Wise (foot circumference): 4E equivalent ■Country of origin: Made in China