While I definitely would place a couple other Batsuits in the running as the "quinsential" Batsuit, but I just have to give it up to this clearly Miller inspired live action version in Batman v. Superman (we're gonna ignore Justice League). Don't even know where to begin. On the practical side we have a reinforced cowl that can take a headshot with minimal damage (although Bruce may have just tanked it). I'm gonna guess the emblem is reinforced and probably bulletproof but it's hard to tell how durable the larger portions are. It's clear that a knife can penetrate but I feel like it wouldn't actually pierce very far as the suit would stop it. On the cosmetic side we have shortened ears (probably to prevent them being caught on anything), an oversized emblem (which has protective purposes), and a voice modulator that sounds slightly unsettling rather than Affleck doing an exaggerated voice.
https://www.youtube.com/watch?v=PL4DkW2D-Mw 