4 pack 4 bright color ice cube trays make 40 ice cubes at a time. Rigid polypropylene design to avoid floppiness, soft thermoplastic silicone bottoms, easy to release your ice sticks. Ice sticks come out about 3.74'' long and 3/4" in diameter, perfectly for cans, beer bottles, insulated stainless steel sports bottles, etc. Fill your ice trays with juice or fruit of what you like, such as water, cola, coffee, juice, tea, fruit puree and more! After removing the ice stick cube tray from the refrigerator, simply let stand for 1 minute, or rinse the bottom silicone with water to remove the ice cubes faster. Never use brute force to take ice, which will cause the ice cube trays cracked.