Food-Grade Platinum Silicone: Made of premium heat-resistant platinum silicone, our food storage containers with lids are lightweight, flexible, shatter-proof, and built for everyday use. They withstand temperatures from -40°F to 446°F (-40°C to 230°C), making them ideal for freezer storage, microwave reheating, and replacing disposable plastic bowls Side Measurement Marks & See-Through Design: These silicone airtight food storage containers with clear measurement marks on the sides help you measure portions accurately for meal prep, snacks, sauces, and leftovers. The transparent design lets you quickly identify contents without opening the container Airtight & Leak-Proof Lid: The food prep containers for lunch with secure-fitting lid helps lock in freshness and prevents spills when tipped over. Perfect for soups, sauces, dressings, fruits, snacks, leftovers, and meal prep. The easy-open tab allows convenient access, making these food containers great for home kitchens, lunch bags, work, travel, and RV use Multiple Sizes for Everyday Needs: Freezer meal prep containers reusable available in 5 oz, 8 oz and 10 oz sizes to meet different storage needs. Use the 5 oz size for dips, condiments, and salad dressings; 8 oz for nuts, snacks, eggs, pudding, yogurt, fruit, oatmeal and 10 oz for leftovers, salads, pasta, vegetables, or meal prep Easy to Clean & Space Saving: Food storage container designed with a smooth non-stick interior for easy food release and quick cleaning. These dishwasher-safe silicone containers resist stains and odors, nest neatly when empty, and stack securely when full to help save space in the fridge, freezer, pantry, or cabinet