Features:Good bottle accessoriesRecommended 1-2 months to replace the accessoriesGreat gift for your baby Specifications:Materia:SiliconeSize:Height: 3.5 cm/1.38\'\' outside diameter: 2.2 cm/0.87\'\'Color:as the picture showQuantity: 2pc Note: 1.Transition: 1cm=10mm=0.39inch          2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.         3.Due to the difference between different monitors, the picture may not reflect the actual color of the