MagMag Straw Cup is designed to advance your baby’s drinking skills by allowing a smooth transition from spout to straw. This Straw Cup is part of the Mag Mag training cup system that promotes the most natural drinking habits and trains your baby to drink liquids in the same way as adults do. Simply step it up with this Straw Cup when they are ready for an advancement from the MagMag Spout Cup Soft silicone straw top is gentle on baby’s tender gums and developing teeth Straw is bent at an angle to help baby drink till the last drop Wide shape bottle allows for easy cleaning Leak-proof Spill-proof How to sterilize the product: Sterilization Method : Boiling, Steam, Chemical Be sure to sterilize before every use. Boiling/Steaming sterilization: Thoroughly wash the product and place in water. Bring the water to a boil. Sterilize for 5 minutes after the water comes to a boil. Chemical sterilization and microwave sterilization are possible. Follow the instructions in the user’s manual for these products. With chemical sterilization, the printing on the bottle may fade.