Metal box approx. 11 x 8 x 2.5cms. Printed to the lid "Horlicks Tablets - A Complete Food - 24 Hour Ration - As Supplied To The Air Ministry". Interesting to note that there are at least 2 slightly different versions of this size of tin each with slightly differing text. This example has been opened but still contains all of the tablets. The tin shows some wear but is in good overall condition. These were issued as part of some of the RAF survival packs in WW2. Stock code S17729.