Dr. Brown's Narrow Sippy Spout Bottle (Lion)Dr. Browns Milestones Narrow Sippy Bottle Start your baby's journey from bottle to cup with Dr. Browns Milestones Narrow Sippy Bottle, an ideal first step in the transition process. Transition to the soft silicone sippy spout as your baby's feeding skills develop, promoting the learning of new drinking techniques. Replace the familiar bottle nipple with the soft silicone sippy spout on the Dr. Browns bottle. The snap on cap ensures the spout remains