Expresso small enamel mug, white with a navy rim, holds 100g of wax, so is similar in size to the small 90g tin. The mug of course can be put to use once you've finished your candle - perfectly made for an expresso, or equally lovely for dips and puddings. Or why not return it to me for a refill! 
 
Please note its not the size of the larger enamel mugs you might use for a big mug of tea when you're camping! But still a lovely size and very useful!