Food-grade materials and durable design - This ice cube tray with lid is made from food-grade silicone and plastic, ensuring the trays are durable and reusable. Easy release for faster use - The bottom has small push points that make releasing ice cubes much easier than traditional ice trays. High capacity with flexible use - Makes up to 42 cubes at one time with two trays in the set; a single tray yields up to 21 cubes. The small tray size fits into most water bottles for quick chilling. Space-saving design - Removable lid resists dirt and odors and allows stacking two ice trays together, saving space in your freezer. 2-3 practical use scenarios - On-the-go hydration: drop ice cubes into water bottles, sports bottles, or travel mugs for fast cooling during workouts or trips. - Flavor and versatility: use juice, coffee, tea, or herbs to create flavor-enhancing ice cubes for drinks and cocktails. - Meal prep and portioning: freeze broth, sauces, soups, herbs, or baby food in controlled portions for convenient future use. How to use - Fill trays with your liquid of choice, place the lid on, and freeze. - When ready, push from the bottom to release the cubes easily. - Stack multiple trays if needed to maximize freezer space.