Clip-on Lids: Each container features a clip-on lid that ensures a tight, secure seal to avoid leaks and keep your food fresh. The lids are also designed to be easy to open and close. Silicone Material: Made from safe, food-grade silicone, these containers are safe for use with a variety of foods. The flexible material ensures durability while keeping your snacks secure. Perfect for Portion Control & Meal Prep: Whether you're packing snacks for kids or prepping meals for the week, these 150ml containers provide the perfect size for portion control and organized meal storage. Versatile and Convenient: These containers are microwave, fridge, freezer, and dishwasher safe, making them ideal for reheating meals, storing leftovers, and cleaning up afterward with minimal effort. Collapsible Design: These containers collapse to a fraction of their size, making them incredibly space-efficient. They're easy to store in your kitchen drawers, pantry, or even your travel bag.