What is the likely definition of a women's "'health' west" from 1891?

In an 1891 newspaper advertisement (published in Manitoba, Canada) there is a reference to "wool 'health' wests in girls and ladies" which on first glance looks like a spelling error but is repeated in other ads in the same year. Unfortunately, this is a very difficult combination of simple words to search for, does anyone have a reference for a definition of this garment term?

It's almost sure to be a misspelling of vest. In the nineteenth century, at least in London, /v/ and /w/ were either interchangeable, or they were replaced by a sound in between. Witness Sam Weller.

Oxford English Dictionary, under "vest" does list the spelling "west" from the 17th century as dialect. From 1712:

Payd for mackin a west and briches for gouddins child, [£]0. 1. 6.

While west might be an alternative spelling for vest, it might also be a local or regional term for weskit or waistcoat (which at the time was typically pronounced "weskit"), formed as a sort of contraction of weskit, or a blending of vest and weskit.