What is a blazer vs. a sport coat?

What a blazer vs. a sport coat is starts with the level of formality. Generally, a sport coat is more informal than a blazer and best suited to business casual and weekend wear. How people typically style them also varies. A blazer usually goes along with pants in a matching color or print, while a sport coat may be paired with a variety of trousers or even jeans. Explore a selection of blazers and sport coats on 1stDibs.