Babies and busy parents love the Mixieâ„¢ formula-mixing baby bottle because hunger simply has no patience. This one-of-a-kind, dad-invented bottle is so expertly designed, it can be filled in advance and mixed at feeding time. The Mixie formula compartment has a patented, airtight design. Simply put formula in the compartment, water in the bottle, and when baby s ready, push the button to release the powder, shake and blend. The formula compartment lid acts as a free-floating agitator, mixing formula and powder thoroughly to prevent any clumping. The perfect travel bottle! Includes 8 oz. bottle, Stage 2 Nipple (for ages 3 months-6 months) and travel cover. Top-rack dishwasher safe. Travel bottle is convenient for parents on the go Perfect for caregivers and childcare centers User-friendly bottle design 8 oz. size holds up to 4 scoops of formula powder BPA, Phthalates, and PVC free 100% silicone nipple Vented nipple minimizes colic Microwave and top-rack dishwasher safe