The Kilner Luxury Glass Preserve Jar is perfect for storing and preserving healthy, home grown foods. The 2-piece lid system comprises of a tin disc and screw band, ensuring a secure vacuum seal is achieved to keep the contents fresher for longer. The jar capacity is 0. 250 litres/250ml which is the perfect size for making jams, jellies and chutneys. Each jar embodies the traditional Kilner styling with the authentic embossed logo and contains a detailed instruction leaflet inside.