This specific tray appears to be made of a flexible material, likely silicone or soft plastic, and is designed to create many small, square-shaped ice cubes.
Key features and uses include:
Material: Often made from BPA-free, food-grade materials that are safe for use in freezers.
Design: The flexible nature allows for easy release of the ice cubes, often with a simple twist or press.
Function: Used to freeze water or other liquids into ice cubes for chilling drinks such as cocktails, whiskey, iced coffee, or juice.
Efficiency: The small grid design can facilitate quicker freezing times compared to larger cube molds.
Convenience: Many modern designs, like the one pictured, are stackable and may include a lid to prevent spills and keep the ice from absorbing freezer odors.