SPILL PREVENTION: The clear cover allows you to carry trays without spilling. The small opening provides easy water fill-upSTACKABLE: The clear cover also allows you to easily stack multiple ice cube trays on top of each otherLONG LASTING ICE CUBES: The dense, less diluted ice cubes produced provides longer lasting, cold beveragesEASY ICE REMOVAL: The soft and flexible material allows you to easily pop out each individual ice cube This product ships in approximately 1 days