These ice cube trays are built from BPA-free, food-grade silicone, designed for direct contact with food and drinks. The material stays flexible when frozen, allowing you to twist and push up the cubes from the bottom without cracking. Each tray includes a secure lid to seal in flavor and reduce freezer odors, helping keep ice cubes fresh between uses. The two-tray set yields fifteen cubes per tray, for a total of thirty cubes, which makes it convenient to stock standard drink sizes or prepare small batches for kids snacks. Overall dimensions are about 7.3 by 5.1 by 1.2 inches, with each cube roughly 1.5 by 1.2 by 0.7 inches. The trays withstand a wide temperature range, from -40°F to 428°F, making them safe for freezing, refrigerating, and microwaving, though direct heating recommendations should follow the material guidelines. Cleaning is straightforward: rinse by hand or place in the dishwasher after use. The versatility extends to freezing items like water, cocktails, whiskey, brandy, chocolates, and even baby food, making these trays a practical kitchen helper. They are dishwasher safe and easy to clean, with no sticky residues, which helps keep the kitchen routine simple. Material: Plastic.