For a baby's initial bottle-to-cup transition, Dr. Brown's sippy bottle is ideal. The bottle's soft silicone sippy spout and 100% silicone handle make it simple to grip and drink from. Safe for the dishwasher and sterilizer, for infants six months and up. Soft silicone sippy spout that transitions Fits any Dr. Brown's Options sippy spout + Wide-neck bottle with a closed vent handles made of 100% removable, easy-to-hold silicone; Most wide bottles and sippy cups can be handled. Safe for the steriliser and the top rack dishwasher