Here is the Sheffield Mistral Dark Blue Plain Weave Check Double-Breasted Blazer, made in a wool fabric. Its pattern is a woven check.

Its composition is simple, 100% wool. Wool breathes, so you'll stay comfortable through a long day.

Your measurements set the cut, so it's made for your build.

Fit comes first.

The wrapped front draws the eye up toward your shoulders. Two columns of buttons and an overlapping front give the jacket a strong line through your chest. It works at the office, at dinner and on the road. You can't go far wrong with dark blue and a crisp white shirt. Since a blazer isn't tied to matching trousers, you can wear it to the office one day and over a T shirt at dinner the next without it looking forced.

Steam it rather than pressing hard.