1. Quality Material: The universal baby car seat locking buckle clip is made of HDPE, durable, resistant to damage and discoloration, soft and comfortable for your child, designed to protect your baby. 2. Function: 5-point lock system helps guide and secure the curved seat strap to enhance child safety, preventing children from releasing themselves from their seats while driving. 3. Size: The fixed lock buckle measures 23cm * 9cm (9in * 3.54in); the 5-point system can be adjusted to a 3-point or 2-point configuration as needed; product meets standard buckle pull force requirements according to European ECE R44/04. 4. Easy to Install and Remove: The car seat chest guard is user-friendly, requires no disassembly or re-bundling, suitable for daily use; adjust the shoulder strap and engage the five-point lock; unlock by pressing the red button. The safety seat buckle can be removed when necessary and is reusable; note that if the buckle cannot be removed or functions improperly, discontinue use. 5. Application: This car seat toddler harness clip is compatible with infant car safety seats and fits most baby 5-point harness systems, including highchairs, strollers, bicycle child seats, golf carts, vehicles, and other child seating equipment requiring replacement straps.