PREVENTS UNBUCKLING: Does your child know how to unbuckle their seat belt? This seat belt buckle lock will prevent your child from getting out of their restraint system. IMPORTANT-ONLY SUITABLE FOR REMOVABLE BELTS: Please check before purchase- the car seat belt must be removable. This car seat buckle must be inserted into a belt opening. SEAT BELT CHEST CONTACT POINT: With this car seat belt buckle, the seat belt remains correctly positioned on your child's pelvis and chest. PACKAGE INCLUDES: 2 baby car seat belt clips, which allow you to drive without having to constantly look behind you. Has your child figured out how to open the child seat belt lock? Does your child regularly buckle up while driving? This safety barrier can prevent your child from climbing out of the belt system. 2 Pack Car Seat Safety Protector - Black - Slip On Car Seats In order for you to mount this safety strap on your child seat, the chest straps must be removable. For most child seats, a release in the form of a belt tensioner is integrated at the back. If you cannot thread the car belt, you cannot use this chest protector. 2-pack car seat safety protectors - black - for slipping onto car seats Installing the car seat safety is simple: 1. Take the child seat out of your car and turn it towards the rear. 2. Now open the seat belt fastener at the back and run the seat belt from the back to the front. 3. Now you place the locking buckle on both chest straps. 4. Now pass the seat belt tabs through the front of the seat to the back. 5. Finally, you close the seat belt fastener at the back and mount the child seat in the car.