A tailored suit, but indeed, every tailored piece of clothing will always have the best fit and comfort. That's trivial. Even your sweat suit would benefit from being a tailored sweat suit.
I have non standard measurements and buying trousers has always been a chore (a cm lower shoulder, a 1/2 cm shorter leg, cyclist quads, life influences body). I've now started to use AI to pre-select brands and fits that might suit my sizing. Which is actually just moving somewhat towards at least 'fitted' clothing. The future of adult and sustainable fashion 'should' be made to measure.