Moisture Matic Plant Watering System 4-Piece Value Pack 2-Medium + 2-Large Keep plants watered while on vacation Best Plant Watering Slution for home and Office 4-Piece Value Pack Offer! 2-Medium + 2-Large Ideal Plant Watering Solution when you are away from home or Office! Simple to Use: fill with water and place on pot rim! High Capacity Water Tank!