Lung Expander is a shoulder brace by stomach strap, as raise the chest. The chest is built as lungs been expanded by pregnancy. I You have need for better breathing in corset, unse a lung expander of a practicable Lung Expander. It also work on man, but the ribs are stiffly. The chest can also been raised of the corset, but it have problem by start becorse the ribs are naturally curved down.
a Lung Expanders expand the lungs and expanded lungs is very important for corset users because the corset block the breathing in abdomen.
Normally Lung Expander is on the outside of corset, but it can also been inside or replace the normally corset.
A problem by corset as Lung Expander, is the stick up shoulder. Because the shoulder go up when the chest been raised, if the corset has not shoulder straps or a lung expander.

older
3,795 Shoulder Brace.
7,627
45,296
52,400
61,825
116,585
146,879 Lung-Protectors.
151,902 Shoulder Brace. On the outside of corset.
154,687 Shoulder-straps
156,278
173,611
198,348
219,011
224,899 Shoulder Brace.
226,885 Combined Corset and Shoulder Brace.
228,238
232,162 Combined stay and Shoulder Brace.
236,718 Shoulder Brace.
270,739 Corset
274,387 Corset.
281,659
281,659
432,363 Shoulder Brace corset
GB 18821394 Chest Expanding Corset. 1882
GB 1912-07474 Mens corset
398,511 Body Brace. 1889
433,095 Shoulder Brace corset 1890
GB1890 16212 Mens corset
468,425 Shoulder Brace.
472,086 Shoulder Brace
481,294
514,834 Shoulder Brace
525,597 Shoulder Brace
690,096 Shoulder Brace.
780,831 Shoulder Brace. 1905
799,440
903,073
945,139
945,200 Shoulder Brace.
948,234 Body Brace.
965,886 Body conformer.
996,343 Shoulder-Brace. On the outside of corset.
1,075,348 Body-Brace.
1,093,379 Shoulder Brace.
1,100,499 Shoulder Brace
1,117,746
on the outside of corset.
1,137,541 Shoulder Brace.
1,312,744 Body conformer.
1,330,739 Shoulder Strap.
1,367,420 Shoulder Brace.
1,532,304 Body Brace.
1,587,716 Lung Expander. 1925.
Republic France 14123
GB1889003002 Chest-expanding Braces.
3,292,616 Posture Brace Garment
old Shoulder Brace
The Shoulder Brace are important to shape the chest in the corset, not
only correct of the shoulders. If the Shoulder Brace have a stomach
belt or it is connected with the corset. The rise of the chest give
better breathing.
Images of Lung Expanders