The Kilner Ceramic Push Top Jars are made from high-quality fine stoneware and are secured with a sturdy, push on lid. A silicone seal ensures the dry food content is kept fresher for longer. The trendy grey glaze colour adds a splash of sophisticated style to any contemporary kitchen. With a capacity of 600 ml, this jar is perfect for storing coffee, teas, sugar and biscuits. Please note this item is hand wash only. The original Kilner Jar, invented by John Kilner and Co. in England, is as much loved and successful now as it was over 180 years ago.