B E N E F I T S Reduces Risk of Ear Infections Reduces Excess Air Intake & Colic Safe and Comfortable Baby Can Drink Upright Encourages Independent Feeding Ideal for Car Seats Place Dr. Straw inside your favorite plastic bottle and screw on the nipple cap as usual. This creates an airtight seal. The flexible straw and the stainless steel ball weight work together. Dr. Straw adjusts to the baby's sitting position, bending and moving as the baby moves to assure that the straw's weighted end is always in the fluid. Because the straw and ball weight move with your baby, a comfortable upright drinking postition can be achieved. Your baby will receive maximum fluid consumption while reducing air intake and the amount of fluid flowing to the middle ear. Why It Works When children are drinking their bottles while lying down, more fluid flows to their inner ear since the tubes in their ears are much shorter. Pediatricians believe drinking in an upright position decreases the amount of fluid flowing to the middle ear and helps reduce the risk of ear infections.