Igluu Meal Prep Glass Containers with Air Vents Lids 5 Pack Rectangle 840ml 28oz BPA-Free Meal Prep Containers Reusable – Borosilicate Glass, Oven SafeHIGH QUALITY DURABLE MATERIALS: The food containers are made from borosilicate glass, and it is the strongest glass available. The freezer storage boxes are stain proof and non toxic. The polypropylene plastic lids are BPA free and leakproof. VERSATILE: These glass meal prep containers are safe to use in the freezer, dishwasher, microwave, air fryer and in the oven. Do not use lids in oven and air fryer. They are capable of withstanding temperatures