HEAT RESISTANT GLASS The vacuum containers are made of borosilicate glass, which can withstand high temperatures and is suitable for use in dishwasher, microwave and oven without lid. BPA FREE LIDS The vacuum lids are made of high quality BPA free plastic with integrated gasket and vacuum valve. They are strong, durable and ensure safe, hygienic storage. EASY TO USE The included hand pump is easy to use and creates a reliable vacuum in seconds. AIRTIGHT SEAL: The vacuum generated minimizes contact with oxygen, which slows down the growth of bacteria and mould - ideal for storing fresh fruits, vegetables, meat or prepared food. MULTIPURPOSE - The glass containers are not only suitable for the kitchen, but also for taking meals to the office, school or travel - thanks to the leak-proof design, everything stays neatly and securely packaged.