1 SAFE MATERIALPPSU Polyphenylsulfone is a type of high performance polymer It is a plastic but has the benefits of glass which is a perfect material for baby bottles It is incredibly durable temperature and fall resistant Which does not absorb odor or color and you can sterilize without any deformation 2 BREAST LIKE The nipple is made of super soft and flexible siliconeand the same shape as moms nursing nipple for a familiar fit Matte surface enables the baby to get a secure and continuous latch 3 UNIQUE DESIGN The ergonomic design makes this bottle comfortable for both parents and babies to hold which brings a good mood to mothers and babies And the rotating handle is perfect to protect the childs wrist and can help baby control drinking 4 DRINK IN EVERY ANGLE 360 Degree Drinkable Straw GroupWeighted straw moving with liquid allows your baby drink from any angle drink milk more casual and relax 5 EASY TO CLEAN wide neck make cleaning a breeze Dishwasher safe or simply clean it by hand Easy to latch and assemble