For the smaller gents here: size 34/36
http://www.ebay.co.uk/itm/1920S-1930S-VINTAGE-WOOL-WAISTCOAT-34-36-CHEST-MENS-YOUTHS-/321194525633?pt=UK_Men_s_Vintage_Clothing&hash=item4ac8af83c1
http://www.ebay.co.uk/itm/1920S-1930S-VINTAGE-WOOL-WAISTCOAT-34-36-CHEST-MENS-YOUTHS-/321194525633?pt=UK_Men_s_Vintage_Clothing&hash=item4ac8af83c1