1. The pockets – how do they look ? laying neat and flat ? Then a good sign you are looking at a quality jacket and suit 2. The Lapels – there should be a slight roll where the lapels begin to fold back on the the jacket and chest – the lapels should not be stiff, flat, wrinkled or crimped looking 3. The fabric of a quality suit is made from fine yarn, be cleanly colored and if there are patterns clearly defined – over all if you are trying on a quality suit the fabric will drape naturally 4. The jacket of a quality jacket is canvas not fused 5. The lining of a jacket that is made from silk or rayon indicates quality and the finished in the tailoring at the hem where the lining is hung should be folded and pressed 6. Examine the stitching – it should be neat and solid Bonus tip – to be nothing really tops off the quality list like the buttons – if the buttons on the suit are made from ceramic, polished brass, mother of pearl or natural horn then you are definitely seeing a sign of a quality suit