I am writing to formally report a serious safety concern regarding my Evenflo Revolve 360 Car Seat, which has developed a significant defect. The harness on the car seat is approximately ¾ torn, compromising its ability to safely secure my child. This issue was discovered despite the fact that we have always stored and installed the car seat properly, in accordance with manufacturer guidelines. Additionally, we do not allow our child to have toys or food in the seat, ensuring that no external factors could have caused this damage. Upon contacting Evenflo regarding the defect, we were met with dismissal and were told that we must have caused the damage ourselves. This response is both frustrating and unacceptable, as the integrity of the harness is critical for my childs safety. Given that car seat failures can have life-threatening consequences, I am deeply concerned that other parents may also be unknowingly using compromised seats. I have seen a few parents with this finding when googling the issue. I urge the NHTSA to investigate this issue, as a failure of the harness could lead to serious injury or fatality in the event of an accident. Please advise on the next steps regarding potential recalls, inspections, or other actions that should be taken to ensure the safety of children using Evenflo products. I appreciate your prompt attention to this matter and look forward to your response. If you require additional information, including photos or serial numbers of the car seat, I would be happy to provide them.