Let me repeat for the record: J.Crew has fallen off a little bit BUT they still have some great pieces including this absolutely-perfect-classic-navy-blazer-for-every-occasion!
It's double-breasted. The juxaposition of the satin lapels and textured wool fabric make it not overly formal but super versatile! The fit is slightly tailored and, once on, you'll be hard-pressed to find an occasion where it doesn't work...
My advice: don't go without it!
Yes...I scooped it too!