Durable Material: The child seat belt buckle is made of high quality ABS material and strong enough woven tape to ensure safety. It has good elasticity, excellent toughness and wear resistance, high temperature resistance, and is not easy to deform. Keep children in the correct position: This belt buckle of child safety lock helps secure the child in the seat and prevents the child from slipping out of the seat belt due to the extension of the arms. Easy to install: The belt buckle safety seats is easy to install, just press the buttons on both sides to open the buckle, then put the seat belt into the buckle, finally close and tighten it. Enough for replacement: This set comes with 4 pieces, enough for replacement. It is very easy to use and can be easily installed or removed. You can quickly attach the safety seat belt clip to a harness. Wide Application: Suitable for most safety seats, flexible and non-slip. Particularly suitable for small babies. It can be used in harnesses, strollers, high chairs and all other seats with harnesses.