I think he might be in the middle of warmups. Those look like jumping jacks to me.
This thing measures approximately 3" wide x 4" tall and is completely waterproof.
P.S.
The price includes the cost of the black self-adhesive envelope as well as the piece of cardboard I have to cut by hand to ensure it doesn't get folded/wrinkled in the hands of your abusive post man or woman.