Safety Buckle Pro Seatbelt Lock and Seat Belt Locking Clip - Keep Children in car seat locked and tight – Stop Kids with special needs from unbuckle - Strong ABS Plastic Buckle Guard – Universal Fit

I absolutely recommend this to anyone who has a toddler that likes to unbuckle . There is no way it can be undone without a key or small thin object to put down in the hole to push the button. I use it to buckle the car seat in the car.

I have a 8 year old son with autism. We recently switched from harness mode to high back booster mode with his car seat. He kept unbuckling his seat belt on the high way or in town and my husband and I were constantly pulling over to buckle him back in. He even climbed into the passenger seat. I purchased two of these (one for my car, and one for my husbands car) and they arrived in two days. Very easy to use and they work!!!! Our son is unable to unbuckle himself. We use are car keys to unlock his seat belt. Easy. My only complaint is that you have to store it somewhere until ready to use it again and it could get losses. Weve been storing them in our cars hidden. Lol. I will be buying one more for his grandmas car.