SMART STORAGE: Get lasting freshness, easy cleaning convenience and lasting durability with the LocknLock Purely Better 44-Ounce Square Food Storage Container ULTRA DURABLE: Always BPA-free, made-to-last Tritan construction is 2X as hard as traditional plastic HIGH PERFORMANCE: Unique 4-hinge locking system is durability tested for an airtight, leakproof seal and long-lasting performance up to 3 million uses ULTIMATE CONVENIENCE: Freezer safe, microwave safe for convenient reheating and dishwasher safe for easy cleanup VERSATILE: Clear, glass-like container provides a convenient, all-in-one storage solution for the refrigerator, freezer, pantry, and on the go WARP + STAIN + ODOR RESISTANT