This Mii Training cup are Designed to Reduce Colic, Gas, & Reflux.
• Built-in Flutter Flex Vent Technology
• Triple Vent Process
• Medical Grade Silicone True Transition Training Spout.
• No Leaks
• BPA Free
• Mii Baby Training Cups are made with ForEver. A Product of Switzerland
• All Mii Baby Products Are Interchangeable