1.Make 40 Ice Cubes at A Time: There comes with 4 pack 4 color silicone ice cube trays that create 10 long ice cubes each. Make 40 ice cubes for water bottles at one time. You'll always have perfectly shaped ice when you need it. (Simply let silicone ice cube tray 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 trays for zer cracked.) 2.Fit through Water Bottles Mouths: The ice trays for zer comes out about 3.74'' long and 3/4' in diameter, easily slipping into most water bottles. silicone ice tray is suitable for cans, water bottles, juice bottles, beer bottles, insulated stainless steel sports bottles and more. 3.Easy to Pop Out: These struggle- silicone ice cube tray has silicone cups that pop out when it's time to chill your drink. It's easy to remove as much as you need - without inadvertently popping out too many. Ice sticks pop out cleanly without cracking or breaking. 4.Fun for Kids: You'll get one of each bright color: orange, purple, blue and green. Fill with juice or fruit to create water fun. Kids will love using these ice trays for making ice, popsicles, or just playing with craft dough and making unique shapes.