Patented Leak-Proof Design: Secure sealing prevents spills and leaks, ideal for carrying porridge, soups, and purees during travel or outings. 8.5 fl oz (250ml) Capacity with Measurement Markings: Perfect for baby food from early to late weaning stages, allowing accurate portion control. Stackable and Space-Saving: Easily stacks for organized storage, maximizing kitchen space without clutter. Microwave, Freezer, and Oven Safe: Convenient for freezing, reheating, and even baking heart-shaped muffins or steamed eggs. Safe and Durable Materials: Made from BPA-free, food-grade materials for safe everyday use and long-lasting durability.