How to use/clean:
1. Assemble from top to groove: insert the nipple into the screw cap, aligning it from top to bottom along the grooves.
2. Check air valve before feeding: use your finger to press the side of the air valve to check if it’s open. If the air valve is not open, gently poke the bottom surface of the valve with a pointed tool to open it.
3. Use dedicated detergent and cleaning brush: when cleaning, hold the tip of the nipple with your fingers to prevent damaging the suction hole and clean gently.
