This food storage set has oven-safe glass lids that can be used in the oven, microwave, and dishwasher. It is made of tempered glass and is freezer-safe up to 425 degrees Fahrenheit. The price drops from $50 to just $29.74 when you apply the code "MOM" during checkout. Log into your free Macy's Rewards account to get free shipping at $25. Otherwise, shipping adds $10.95 on orders below $49.