Features: Made from BPA Free, Lead Free, food-safe, and durable high borosilicate glass • With easy-to-close, airtight, and leakproof snap locking lid on four sides • Perfect for storing leftovers, meal preps, snacks, lunch and more • Has temperature resistance from -20°C to 400°C • Safe to use in ovens, microwave ovens (lids must be taken off before using in the oven or microwave), and freezers • Leak-free and odor-free • Airtight lid / Ergonomically designed locking system for easy opening and closing