Based on this product's specifications, here are some alternatives and similar models
3MK Armor Case mobile phone case Galaxy S21 5G durable protection
Summary description:
The 3MK Armor Case is designed for the Galaxy S21 5G, offering robust protection against drops and scratches. Its durable materials ensure long-lasting use while maintaining a slim profile. The precise cutouts provide easy access to all ports and buttons, enhancing usability without compromising on protection.