The usual perks include more legroom, wider seats and extra baggage allowance.
Another relatively modern phenomenon is premium economy class, which offers a slightly more elevated experience than regular economy, but without the luxury and sky-high prices of business class. Though the concept was invented before the 2010s, it's in this decade that premium economy really took off, with more and more airlines offering passengers this option. The usual perks include more legroom, wider seats and extra baggage allowance.