This set of 3 rectangular food containers, Agatha Model, is made of high-quality borosilicate glass that withstands extreme temperatures. They have a polypropylene lid and a silicone gasket. These food containers are oven-safe (up to 420°C) WITHOUT USING THE LID. They have an airtight seal and they are reusable and easy to clean. Important: When removing the container from fridge or freezer, do not introduce it in a pre-heated oven at more than 120°C. Capacity/ Size / Weight: 640ml / 16.9 x 12.3 x 5.5cm / 380g; 1,040ml/19.6 x 14.6 x 5.8cm / 600g; 1,520ml / 22 x 16.4 x 6.6cm / 780g.