Based on this product's specifications, here are some alternatives and similar models
Protective Clear Silicone Case Evelatus for Samsung Galaxy S9, 1.5mm TPU, Transparent
Summary description:
Transparent protective case by Evelatus designed for Samsung Galaxy S9. Made of 1.5 mm TPU silicone, it offers lightweight shock absorption and scratch protection while maintaining device visibility and access to ports, buttons and camera. Slim, flexible and easy to fit, suitable for everyday use to preserve the phone’s appearance and provide basic drop protection.