Abstract: A foot wearing device includes a left wearing unit, configured to be worn on a left foot of a user; a right wearing unit, configured to be worn on a right foot of the user; a signal transmitting unit, arranged on one of a left side of the left wearing unit and a right side of the right wearing unit and configured to transmit signals; a signal detecting unit, arranged on the other of the left side of the left wearing unit and the right side of the right wearing unit and configured to detect signals transmitted by the signal transmitting unit; and a prompt unit, electrically connected to the signal detecting unit and configured to prompt the user if the signal detecting unit detects that there are signals transmitted by the signal transmitting unit.

Abstract: An extension strap for a bra includes a base element, a first clasp element, a second clasp element and a fasten element group. The base element includes a first portion, a second portion and a third portion. The first portion includes a first accommodating space and a first opening. The first clasp element includes a first clasp and a first connection portion, the first connection portion is located in the first accommodating space, and the first clasp protruding from the first opening. The fasten element group includes at least two fasten elements disposed on the second portion, each fasten element includes a ring portion and a base portion connected between the ring portion and the second portion. The first clasp is configured to move along the first opening so as to change a distance between the first clasp element and the second clasp element.