Disclosed herein is a protective device which comprises an orthosis configured to be received against the upper front torso of a subject adjacent the subjects breasts, so as to restrict or eliminate stress on the breasts resulting from an external load applied to the upper front torso, the device including means for removably holding the orthosis to the subject or to an object applying the load such that the orthosis is so received. Also disclosed herein is an orthosis arranged to be received between the upper front torso of a subject and a support through which a load is applied to the upper front torso, to restrict or eliminate stress on the subjects breasts resulting from the load, the orthosis comprising a generally hollow resiliently deformable body defined by a wall of the orthosis, the body being arranged to contact the subject adjacent the breasts, and resiliently deformable ribbing within the body to support the wall, whereby the orthosis deforms resiliently when so received.