Is this suit good for a job interview?

Yes. Solid navy is the safest interview color, and the modern fit looks current without being fashion-forward. It suits finance, sales and corporate roles especially well.

How does the 38S fit compare with a 38R?

The 38S is cut for shorter men, with a shorter jacket body and sleeves than the 38R. If you are under about 5'8", the short length usually needs less tailoring.

No. It is a wool blend, which keeps the structure and lowers the cost but breathes less than pure wool. That matters more in summer or heated offices.

Can I wear the jacket and trousers separately?

Yes, the solid color lets the jacket work as a blazer and the trousers as dress pants. They will fade at slightly different rates, so rotate them evenly.

What will I need to alter?

Expect to hem the trousers and possibly take in the waist. Check the sleeve length, since the short jacket runs short on taller wearers.

Is it worth it over a made-to-measure suit?

If you wear a suit daily, made-to-measure gives a better shoulder and drape. For occasional events and interviews, this suit covers the need at far less cost.