· BOTTLE TO SIPPY TRANSITION. Transition from bottle nipple to soft silicone sippy spout to teach baby new drinking skills.· SIPPY WITH HANDLES. Easy grip 100% silicone handles are flexible and easy to hold. Bottle handles are removable and fit most other wide-neck bottles.· 100% SILICONE SIPPY SPOUT. Sippy spout fits any Dr. Brown’s Options+ Wide-Neck bottle when the vent system is removed.· GROWS WITH BABY. Sippy spout helps baby develop new drinking and motor skills while using the bottle they know and love.· TRAVEL-FRIENDLY SIPPY BOTTLE. Snap-on cap helps prevent spills and keeps the spout clean when on-the-go.· EASY TO CLEAN. All parts are dishwasher (top rack only) and sterilizer safe.· BPA-free. 6m+.