Silver metal (don't really know what it is but could be silver plate) 'hot water bottle', 5.5 cm long. Lovely for warming the bed before your doll gets into it (not recommended for wax dolls).
If you would like to buy it please contact me so that I can work out carriage. Paypal is one payment option, but the automatic check out is a better one for me if you are not in the UK, as their fees are more reasonable. I can just edit the price to include the postage, so please email me before checking out, so I can give you the total.