Thank you for viewing. This is the genuine Combi option part, the "Fit Mat." It's an auxiliary item for securely installing a child seat, and it's effective when the center of the seat is indented, the car seat is too soft, or the car's buckle is too long. ■ Brand: Combi ■ Product Name: Fit Mat (Child Seat Option) ■ Size: W410 x D450 x H30mm ■ Weight: 490g ■ Compatibility: Child seats with seat belt installation (※ Not compatible with ISOFIX child seats) ■ Condition: Used for one year. There are minor scratches, but no noticeable damage, and it's in generally good condition. No food was eaten in the car. ■ Product Description: ・Allows stable installation even if there are steps or indentations in the car seat. ・Firmly supports the child seat's seating. ・Genuine option part to more reliably protect your child's safety.