A suit vest with a fabric back is made of the same fabric as the front and offers a uniform and elegant appearance. It looks more stylish and is good for formal occasions, especially when worn without a jacket.
A lined back vest, on the other hand, has a back made of a lighter lining fabric such as polyester or silk. It is more functional and offers better breathability, which is particularly pleasant when the vest is worn under a jacket. It is less conspicuous and a little less formal compared to the fabric back version.
In summary, a waistcoat with a fabric back is more elegant and perfect for formal occasions, while a waistcoat with a lining back is more practical and comfortable, especially under a jacket.
In summary, a waistcoat with a fabric back is more stylish and elegant, especially when worn without a jacket. It gives the outfit a consistently high-quality look. A waistcoat with a lining back, on the other hand, is more practical, offers more comfort and is ideal when the waistcoat is worn under a jacket, as the back is then usually hidden.