Manufacturer : YGiTK. The inverted inner mouth design at the milk inlet prevents backflow and spilling when disassembling after pumping. 【More Sizes for Most Moms with 4 Modes & 12 Gears】Standard with 24mm flange, plus 19mm and 21mm adapters,mimics a baby's natural sucking rhythm, perfectly fitting most breast sizes and special nipple conditions (flat, large, small).
