... it will help infant's oral development. Using soft silicone material can maintain the same pressure both inside and outside ... resistant from -60 to +200 degreeFeatures:(1) Food grade silicone material,colorless,odorless,nontoxic(2) High transparence and good anti ... (5)SGS,FDA, GTQ certification(6)Full experience in silicone products Shipment and PaymentMOQ2000 piecesPortGuangzhou,ShenzhenPaymentT/T, L/C ...