Chemistry, Christmas, and geocaching combine in this trackable trio. The front of each shows an atom with spinning electrons and 3D details. The back has a ridged pattern around the outside ring and laser engraved foil in the centre that is adhered to the token. They feature data from the Periodic Table for holmium, whose symbol Ho is used to give the trackable a Christmas flavour. Cutouts in the metal add to the appearance and allow for easy attachment to an object for travel.or to hang on your Christmas tree and make it trackable!