The intended users of the back posture support device include athletes and fitness enthusiasts seeking to enhance their squat technique and prevent lower back injuries, as well as personal trainers and fitness instructors who guide clients in safe exercise practices. Furthermore, physical therapists may employ the device to aid healing for people with the history of lower back pain in order to enhance therapeutic process. The device will be used in different scenarios including the fitness gym centers, household workout spaces and rehabilitation therapy programs in physical therapy centers, thereby addressing and meeting daily user needs by making exercises safer and maintaining spinal health.