These are traditionally for men but are so wonderfully warm, comfortable and stylish that I wear them every winter. The measurement is around the bosom, not under...... 
Mostly made from hand woven sheeps wool by the Ghandi Co-operative, they are lined with hand woven cotton, hence the varying colour patterns. There is a small collection of Yak fur waistcoats, too. These are thicker and are lined with wool woven in a Kashmiri pattern.