The TESTING Collection by Casa Competizione.

The TESTING sweats - featuring prototype number circle with high quality plastisol screen printing on the right leg with signature Casa Competizione flag logo on the left pocket.

The only time you will ever want to take them off, is when you need to put your race suit on.

"PROVA" - "TEST" or to PROVE. Originally used by historic Italian cars who first had these very 5 letters painted on them during prototype testing so Italian Authorities would not bother the test drivers during unrestricted road testing. 

You can try and get away with it today, probably won't work, unless you happen to live in Maranello. BUONA FORTUNA