Guess Porcelain Collection. The collection features an effective design with a stylish pattern and top-level protection. The case is embellished with a vintage-style gold Guess logo and offers superior protection. The collection is inspired by the latest trends prevailing in the world's leading fashion houses. The case is made of thermoplastic polyurethane and showcases a unique motif that adds charm to your iPhone and emphasizes its prestige. The case is not just amazing.