Package Includes - 2X Seat Chest buckle Material - This baby safety buckle is made of quality nylon material with good strength, excellent toughness and wear resistance. Protect your baby -This Safety Belt buckle will ensure you have a safe trip for both driver and passengers in back seats.It helps to locate and curved schoolbag strap to ensure the safety of the child. Function - The chest is suitable for most seats,booster and strollers, to prevent children from leaving the child seat or stroller, and provide more safety for the baby. Size (L*W) - 5.75" x 1.57" This anti-skid is suit for most seats, the right size stroller set is suitable for most children. Safety chest button, built-in unlock is safer.