Transition from bottle to cup one sip at a time with Dr. Brown’s Milestones™ Sippy Bottle. Perfect for introducing baby to a sippy spout, the Sippy Bottle replaces the bottle nipple with a soft silicone spout on the Dr. Brown’s bottle that baby is already familiar with. Plus, the sippy spout fits any Dr. Brown’s Standard/Narrow Options™ bottle after the internal vent system is removed. The Milestones Sippy Bottle is the first step when transitioning baby from bottle to cup, taking weaning one sip at a time. Choose from a range of playful prints! All parts are sterilizer and dishwasher safe (top rack). 250 ml, 6m . BPA free