Size: The safety seat chest strap clip size is 14.6*4cm/5.74*1.57in. It will fit most car seats and strollers, and fit most children. You don't have to worry that it can't be used. Material: Made of PA66 nylon, it has good mechanical strength, excellent hardness and wear resistance, self-lubrication, good oil resistance, excellent gas barrier and heat resistance, excellent fluidity and mouldability. Protects children: the baby seat belt clip can be used in car seats and strollers to prevent the seat belt from falling out because the baby is too small and to prevent the seat belt from moving towards the child's face or neck. provide more security. GREAT ACCESSORY: This is a great accessory that will help find the seat belt and keep the child safe. Fits most car seats, the correct size stroller will fit most children. Security trunk button, the integrated unlocking is more secure. Note: This item must be removed from your car seat seat belt in order to pass it through this buckle. If the seat belt cannot be removed, the item does not fit.