Premium Borosilicate Glass: Durable and heat-resistant glass containers, ideal for meal prep, storage, and reheating. Safe for oven (up to 450°F), microwave, and dishwasher. 8-Piece Set Includes: (4) 1-cup capacity glass containers with (4) BPA-free, airtight lids for leakproof food storage and freshness. Space-Saving Design: Compact, stackable containers for easy pantry and refrigerator organization. Great for meal prep or leftovers. BPA-Free Airtight Lids: Secure, leakproof lids ensure long-lasting food freshness. Top-rack dishwasher safe for easy cleaning. (not oven safe) Versatile Use: Ideal for meal prepping, storing leftovers, or organizing small snacks. Safe for reheating food directly in the container.