135mm x 135mm square greeting card from Broadway, by Connor H G, our resident art monkey.
I think they're also shaped like that so that if a bauble is dropped, it'll just flick back up safely.
Possibly made up Elf fact: They sleep upside down like Bats.
(Hence the shoes.)
Supplied with white envelope. Blank inside for your own secret message (that will immediately be shared upon opening and reading).
Image © Connor H G 2020 Do not reproduce, copy or edit without the artists permission.