The LocknLock Classic Rectangular Food Container 850ml is the gold standard in airtight food storage. Engineered with a patented four-side locking lid and a hollow center silicone seal, it provides an absolute airtight barrier that preserves food freshness and prevents leaks, making it an ideal bento-style lunch box for those on the go. Built for longevity, the high-quality polypropylene (PP) construction is designed to withstand rigorous daily use, with lids capable of being opened more than three million times. For the environmentally conscious, the Eco-Friendly upgrade incorporates recycled plastics (up to 100% food-grade salvaged waste in some versions), reducing plastic waste without compromising the container's structural integrity. Performance is at the core of the design. This container is fully compatible with the modern kitchen workflow: it can move seamlessly from the freezer to the microwave for reheating and into the dishwasher for easy cleaning. It is certified BPA-free and non-toxic, meeting safety standards from global agencies including the FDA, KEMTI, and SGS. Beyond the kitchen, its durable build and secure seal make it a practical solution for organizing household items like batteries, keys, or screws. The rectangular shape is specifically designed to maximize space efficiency in refrigerators, cupboards, and drawers, ensuring your storage remains organized and clutter-free.