1. Open a hole in the wiple before using this Please reference the following way Place remove the small part of the rubber on the top of hipple by a thick needle or depict a cross on the top of the nipple it is good if the water in a stable state of dip or tickle by gently
2 Plc wach the milk bottle cap and nipple by warm water before using the
3. This product with a special bottle brush which could clean the bottle easily The bottle is marked with a scale which could be easier to control the amount of drinking to prevent feed your pet too much or too little
5. The material of nipple is druable Gel material is soft
and flexible This product is safety and environmental