... silicone rubber, FDA certificate, our patent design!! baby feeding bottle, our patent design! StandardQ/YLJGXJ 8 ... up to SGS and QS standard, maintain baby health.3: Unique skidproof design for comfortable and ... nipple bottom, natural feeling as breasts to baby.6: The nipple has automatic air flowing hole ... adjust the flow of milk and prevent the baby from sucking excessive air, reduce the phenomenon ...