This safety belt buckle loop can be installed on existing seat belt buckles for a more secure connection. Ideal for traveling with children, ensuring you don't have to worry about your child's safety in the back seat. [Durable Material] The car seat buckle is made of high-quality thick plastic material, durable and can be used for a long time. Easy to Use – A set includes two seat belt covers and two keys. This can be used to equip both rear seats. They can be easily removed and installed with the help of a key. Easy to Apply Function – This car seat belt buckle adapter is designed to prevent children from secretly unbuckling their seat belts while driving. It is used to secure child seats and improve safety while driving. Please Note – Please ensure the size fits before purchasing. Seat belt buckles fit most vehicles but cannot be used on front passenger seats. It only works on the rear bench seat. Note: All data is manually measured, please allow an error of 1-3 cm due to lighting and display differences. There may be color variations, please refer to the actual item received.